| 1 | /* $NetBSD: server.c,v 1.6 2019/05/02 14:57:01 taca Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (C) Internet Systems Consortium, Inc. ("ISC") |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public |
| 7 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 8 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * See the COPYRIGHT file distributed with this work for additional |
| 11 | * information regarding copyright ownership. |
| 12 | */ |
| 13 | |
| 14 | /*! \file */ |
| 15 | |
| 16 | #include <config.h> |
| 17 | |
| 18 | #include <inttypes.h> |
| 19 | #include <stdbool.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <unistd.h> |
| 22 | #include <limits.h> |
| 23 | #include <ctype.h> |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/stat.h> |
| 26 | |
| 27 | #include <isc/aes.h> |
| 28 | #include <isc/app.h> |
| 29 | #include <isc/base64.h> |
| 30 | #include <isc/commandline.h> |
| 31 | #include <isc/dir.h> |
| 32 | #include <isc/file.h> |
| 33 | #include <isc/hash.h> |
| 34 | #include <isc/hex.h> |
| 35 | #include <isc/hmac.h> |
| 36 | #include <isc/httpd.h> |
| 37 | #include <isc/lex.h> |
| 38 | #include <isc/meminfo.h> |
| 39 | #include <isc/nonce.h> |
| 40 | #include <isc/parseint.h> |
| 41 | #include <isc/platform.h> |
| 42 | #include <isc/portset.h> |
| 43 | #include <isc/print.h> |
| 44 | #include <isc/refcount.h> |
| 45 | #include <isc/resource.h> |
| 46 | #include <isc/socket.h> |
| 47 | #include <isc/stat.h> |
| 48 | #include <isc/stats.h> |
| 49 | #include <isc/stdio.h> |
| 50 | #include <isc/string.h> |
| 51 | #include <isc/task.h> |
| 52 | #include <isc/timer.h> |
| 53 | #include <isc/util.h> |
| 54 | #include <isc/xml.h> |
| 55 | |
| 56 | #include <isccfg/grammar.h> |
| 57 | #include <isccfg/namedconf.h> |
| 58 | |
| 59 | #include <bind9/check.h> |
| 60 | |
| 61 | #include <dns/adb.h> |
| 62 | #include <dns/badcache.h> |
| 63 | #include <dns/cache.h> |
| 64 | #include <dns/catz.h> |
| 65 | #include <dns/db.h> |
| 66 | #include <dns/dispatch.h> |
| 67 | #include <dns/dlz.h> |
| 68 | #include <dns/dnsrps.h> |
| 69 | #include <dns/dns64.h> |
| 70 | #include <dns/dyndb.h> |
| 71 | #include <dns/events.h> |
| 72 | #include <dns/forward.h> |
| 73 | #include <dns/fixedname.h> |
| 74 | #include <dns/journal.h> |
| 75 | #include <dns/keytable.h> |
| 76 | #include <dns/keyvalues.h> |
| 77 | #include <dns/lib.h> |
| 78 | #include <dns/master.h> |
| 79 | #include <dns/masterdump.h> |
| 80 | #include <dns/nta.h> |
| 81 | #include <dns/order.h> |
| 82 | #include <dns/peer.h> |
| 83 | #include <dns/portlist.h> |
| 84 | #include <dns/private.h> |
| 85 | #include <dns/rbt.h> |
| 86 | #include <dns/rdataclass.h> |
| 87 | #include <dns/rdatalist.h> |
| 88 | #include <dns/rdataset.h> |
| 89 | #include <dns/rdatastruct.h> |
| 90 | #include <dns/resolver.h> |
| 91 | #include <dns/rootns.h> |
| 92 | #include <dns/rriterator.h> |
| 93 | #include <dns/secalg.h> |
| 94 | #include <dns/soa.h> |
| 95 | #include <dns/stats.h> |
| 96 | #include <dns/tkey.h> |
| 97 | #include <dns/tsig.h> |
| 98 | #include <dns/ttl.h> |
| 99 | #include <dns/view.h> |
| 100 | #include <dns/zone.h> |
| 101 | #include <dns/zt.h> |
| 102 | |
| 103 | #include <dst/dst.h> |
| 104 | #include <dst/result.h> |
| 105 | |
| 106 | #include <ns/client.h> |
| 107 | #include <ns/hooks.h> |
| 108 | #include <ns/listenlist.h> |
| 109 | #include <ns/interfacemgr.h> |
| 110 | |
| 111 | #include <named/config.h> |
| 112 | #include <named/control.h> |
| 113 | #ifdef HAVE_GEOIP |
| 114 | #include <named/geoip.h> |
| 115 | #endif /* HAVE_GEOIP */ |
| 116 | #include <named/log.h> |
| 117 | #include <named/logconf.h> |
| 118 | #include <named/main.h> |
| 119 | #include <named/os.h> |
| 120 | #include <named/server.h> |
| 121 | #include <named/statschannel.h> |
| 122 | #include <named/tkeyconf.h> |
| 123 | #include <named/tsigconf.h> |
| 124 | #include <named/zoneconf.h> |
| 125 | #ifdef HAVE_LIBSCF |
| 126 | #include <named/smf_globals.h> |
| 127 | #include <stdlib.h> |
| 128 | #endif |
| 129 | |
| 130 | #ifdef HAVE_LMDB |
| 131 | #include <lmdb.h> |
| 132 | #define count_newzones count_newzones_db |
| 133 | #define configure_newzones configure_newzones_db |
| 134 | #define dumpzone dumpzone_db |
| 135 | #else /* HAVE_LMDB */ |
| 136 | #define count_newzones count_newzones_file |
| 137 | #define configure_newzones configure_newzones_file |
| 138 | #define dumpzone dumpzone_file |
| 139 | #endif /* HAVE_LMDB */ |
| 140 | |
| 141 | #ifndef PATH_MAX |
| 142 | #define PATH_MAX 1024 |
| 143 | #endif |
| 144 | |
| 145 | #ifndef SIZE_MAX |
| 146 | #define SIZE_MAX ((size_t)-1) |
| 147 | #endif |
| 148 | |
| 149 | #ifndef SIZE_AS_PERCENT |
| 150 | #define SIZE_AS_PERCENT ((size_t)-2) |
| 151 | #endif |
| 152 | |
| 153 | #ifdef TUNE_LARGE |
| 154 | #define RESOLVER_NTASKS 523 |
| 155 | #define UDPBUFFERS 32768 |
| 156 | #define EXCLBUFFERS 32768 |
| 157 | #else |
| 158 | #define RESOLVER_NTASKS 31 |
| 159 | #define UDPBUFFERS 1000 |
| 160 | #define EXCLBUFFERS 4096 |
| 161 | #endif /* TUNE_LARGE */ |
| 162 | |
| 163 | #define MAX_TCP_TIMEOUT 65535 |
| 164 | |
| 165 | /*% |
| 166 | * Check an operation for failure. Assumes that the function |
| 167 | * using it has a 'result' variable and a 'cleanup' label. |
| 168 | */ |
| 169 | #define CHECK(op) \ |
| 170 | do { result = (op); \ |
| 171 | if (result != ISC_R_SUCCESS) goto cleanup; \ |
| 172 | } while (/*CONSTCOND*/0) |
| 173 | |
| 174 | #define TCHECK(op) \ |
| 175 | do { tresult = (op); \ |
| 176 | if (tresult != ISC_R_SUCCESS) { \ |
| 177 | isc_buffer_clear(*text); \ |
| 178 | goto cleanup; \ |
| 179 | } \ |
| 180 | } while (/*CONSTCOND*/ 0) |
| 181 | |
| 182 | #define CHECKM(op, msg) \ |
| 183 | do { result = (op); \ |
| 184 | if (result != ISC_R_SUCCESS) { \ |
| 185 | isc_log_write(named_g_lctx, \ |
| 186 | NAMED_LOGCATEGORY_GENERAL, \ |
| 187 | NAMED_LOGMODULE_SERVER, \ |
| 188 | ISC_LOG_ERROR, \ |
| 189 | "%s: %s", msg, \ |
| 190 | isc_result_totext(result)); \ |
| 191 | goto cleanup; \ |
| 192 | } \ |
| 193 | } while (/*CONSTCOND*/0) \ |
| 194 | |
| 195 | #define CHECKMF(op, msg, file) \ |
| 196 | do { result = (op); \ |
| 197 | if (result != ISC_R_SUCCESS) { \ |
| 198 | isc_log_write(named_g_lctx, \ |
| 199 | NAMED_LOGCATEGORY_GENERAL, \ |
| 200 | NAMED_LOGMODULE_SERVER, \ |
| 201 | ISC_LOG_ERROR, \ |
| 202 | "%s '%s': %s", msg, file, \ |
| 203 | isc_result_totext(result)); \ |
| 204 | goto cleanup; \ |
| 205 | } \ |
| 206 | } while (/*CONSTCOND*/0) \ |
| 207 | |
| 208 | #define CHECKFATAL(op, msg) \ |
| 209 | do { result = (op); \ |
| 210 | if (result != ISC_R_SUCCESS) \ |
| 211 | fatal(msg, result); \ |
| 212 | } while (/*CONSTCOND*/0) \ |
| 213 | |
| 214 | /*% |
| 215 | * Maximum ADB size for views that share a cache. Use this limit to suppress |
| 216 | * the total of memory footprint, which should be the main reason for sharing |
| 217 | * a cache. Only effective when a finite max-cache-size is specified. |
| 218 | * This is currently defined to be 8MB. |
| 219 | */ |
| 220 | #define MAX_ADB_SIZE_FOR_CACHESHARE 8388608U |
| 221 | |
| 222 | struct named_dispatch { |
| 223 | isc_sockaddr_t addr; |
| 224 | unsigned int dispatchgen; |
| 225 | dns_dispatch_t *dispatch; |
| 226 | ISC_LINK(struct named_dispatch) link; |
| 227 | }; |
| 228 | |
| 229 | struct named_cache { |
| 230 | dns_cache_t *cache; |
| 231 | dns_view_t *primaryview; |
| 232 | bool needflush; |
| 233 | bool adbsizeadjusted; |
| 234 | dns_rdataclass_t rdclass; |
| 235 | ISC_LINK(named_cache_t) link; |
| 236 | }; |
| 237 | |
| 238 | struct dumpcontext { |
| 239 | isc_mem_t *mctx; |
| 240 | bool dumpcache; |
| 241 | bool dumpzones; |
| 242 | bool dumpadb; |
| 243 | bool dumpbad; |
| 244 | bool dumpfail; |
| 245 | FILE *fp; |
| 246 | ISC_LIST(struct viewlistentry) viewlist; |
| 247 | struct viewlistentry *view; |
| 248 | struct zonelistentry *zone; |
| 249 | dns_dumpctx_t *mdctx; |
| 250 | dns_db_t *db; |
| 251 | dns_db_t *cache; |
| 252 | isc_task_t *task; |
| 253 | dns_dbversion_t *version; |
| 254 | }; |
| 255 | |
| 256 | struct viewlistentry { |
| 257 | dns_view_t *view; |
| 258 | ISC_LINK(struct viewlistentry) link; |
| 259 | ISC_LIST(struct zonelistentry) zonelist; |
| 260 | }; |
| 261 | |
| 262 | struct zonelistentry { |
| 263 | dns_zone_t *zone; |
| 264 | ISC_LINK(struct zonelistentry) link; |
| 265 | }; |
| 266 | |
| 267 | /*% |
| 268 | * Configuration context to retain for each view that allows |
| 269 | * new zones to be added at runtime. |
| 270 | */ |
| 271 | typedef struct ns_cfgctx { |
| 272 | isc_mem_t * mctx; |
| 273 | cfg_parser_t * conf_parser; |
| 274 | cfg_parser_t * add_parser; |
| 275 | cfg_obj_t * config; |
| 276 | cfg_obj_t * vconfig; |
| 277 | cfg_obj_t * nzf_config; |
| 278 | cfg_aclconfctx_t * actx; |
| 279 | } ns_cfgctx_t; |
| 280 | |
| 281 | /*% |
| 282 | * A function to write out added-zone configuration to the new_zone_file |
| 283 | * specified in 'view'. Maybe called by delete_zoneconf(). |
| 284 | */ |
| 285 | typedef isc_result_t (*nzfwriter_t)(const cfg_obj_t *config, dns_view_t *view); |
| 286 | |
| 287 | /*% |
| 288 | * Holds state information for the initial zone loading process. |
| 289 | * Uses the isc_refcount structure to count the number of views |
| 290 | * with pending zone loads, dereferencing as each view finishes. |
| 291 | */ |
| 292 | typedef struct { |
| 293 | named_server_t *server; |
| 294 | bool reconfig; |
| 295 | isc_refcount_t refs; |
| 296 | } ns_zoneload_t; |
| 297 | |
| 298 | typedef struct { |
| 299 | named_server_t *server; |
| 300 | } catz_cb_data_t; |
| 301 | |
| 302 | typedef struct catz_chgzone_event { |
| 303 | ISC_EVENT_COMMON(struct catz_chgzone_event); |
| 304 | dns_catz_entry_t *entry; |
| 305 | dns_catz_zone_t *origin; |
| 306 | dns_view_t *view; |
| 307 | catz_cb_data_t *cbd; |
| 308 | bool mod; |
| 309 | } catz_chgzone_event_t; |
| 310 | |
| 311 | typedef struct { |
| 312 | unsigned int magic; |
| 313 | #define DZARG_MAGIC ISC_MAGIC('D', 'z', 'a', 'r') |
| 314 | isc_buffer_t **text; |
| 315 | isc_result_t result; |
| 316 | } ns_dzarg_t; |
| 317 | |
| 318 | /* |
| 319 | * These zones should not leak onto the Internet. |
| 320 | */ |
| 321 | const char *empty_zones[] = { |
| 322 | /* RFC 1918 */ |
| 323 | "10.IN-ADDR.ARPA" , |
| 324 | "16.172.IN-ADDR.ARPA" , |
| 325 | "17.172.IN-ADDR.ARPA" , |
| 326 | "18.172.IN-ADDR.ARPA" , |
| 327 | "19.172.IN-ADDR.ARPA" , |
| 328 | "20.172.IN-ADDR.ARPA" , |
| 329 | "21.172.IN-ADDR.ARPA" , |
| 330 | "22.172.IN-ADDR.ARPA" , |
| 331 | "23.172.IN-ADDR.ARPA" , |
| 332 | "24.172.IN-ADDR.ARPA" , |
| 333 | "25.172.IN-ADDR.ARPA" , |
| 334 | "26.172.IN-ADDR.ARPA" , |
| 335 | "27.172.IN-ADDR.ARPA" , |
| 336 | "28.172.IN-ADDR.ARPA" , |
| 337 | "29.172.IN-ADDR.ARPA" , |
| 338 | "30.172.IN-ADDR.ARPA" , |
| 339 | "31.172.IN-ADDR.ARPA" , |
| 340 | "168.192.IN-ADDR.ARPA" , |
| 341 | |
| 342 | /* RFC 6598 */ |
| 343 | "64.100.IN-ADDR.ARPA" , |
| 344 | "65.100.IN-ADDR.ARPA" , |
| 345 | "66.100.IN-ADDR.ARPA" , |
| 346 | "67.100.IN-ADDR.ARPA" , |
| 347 | "68.100.IN-ADDR.ARPA" , |
| 348 | "69.100.IN-ADDR.ARPA" , |
| 349 | "70.100.IN-ADDR.ARPA" , |
| 350 | "71.100.IN-ADDR.ARPA" , |
| 351 | "72.100.IN-ADDR.ARPA" , |
| 352 | "73.100.IN-ADDR.ARPA" , |
| 353 | "74.100.IN-ADDR.ARPA" , |
| 354 | "75.100.IN-ADDR.ARPA" , |
| 355 | "76.100.IN-ADDR.ARPA" , |
| 356 | "77.100.IN-ADDR.ARPA" , |
| 357 | "78.100.IN-ADDR.ARPA" , |
| 358 | "79.100.IN-ADDR.ARPA" , |
| 359 | "80.100.IN-ADDR.ARPA" , |
| 360 | "81.100.IN-ADDR.ARPA" , |
| 361 | "82.100.IN-ADDR.ARPA" , |
| 362 | "83.100.IN-ADDR.ARPA" , |
| 363 | "84.100.IN-ADDR.ARPA" , |
| 364 | "85.100.IN-ADDR.ARPA" , |
| 365 | "86.100.IN-ADDR.ARPA" , |
| 366 | "87.100.IN-ADDR.ARPA" , |
| 367 | "88.100.IN-ADDR.ARPA" , |
| 368 | "89.100.IN-ADDR.ARPA" , |
| 369 | "90.100.IN-ADDR.ARPA" , |
| 370 | "91.100.IN-ADDR.ARPA" , |
| 371 | "92.100.IN-ADDR.ARPA" , |
| 372 | "93.100.IN-ADDR.ARPA" , |
| 373 | "94.100.IN-ADDR.ARPA" , |
| 374 | "95.100.IN-ADDR.ARPA" , |
| 375 | "96.100.IN-ADDR.ARPA" , |
| 376 | "97.100.IN-ADDR.ARPA" , |
| 377 | "98.100.IN-ADDR.ARPA" , |
| 378 | "99.100.IN-ADDR.ARPA" , |
| 379 | "100.100.IN-ADDR.ARPA" , |
| 380 | "101.100.IN-ADDR.ARPA" , |
| 381 | "102.100.IN-ADDR.ARPA" , |
| 382 | "103.100.IN-ADDR.ARPA" , |
| 383 | "104.100.IN-ADDR.ARPA" , |
| 384 | "105.100.IN-ADDR.ARPA" , |
| 385 | "106.100.IN-ADDR.ARPA" , |
| 386 | "107.100.IN-ADDR.ARPA" , |
| 387 | "108.100.IN-ADDR.ARPA" , |
| 388 | "109.100.IN-ADDR.ARPA" , |
| 389 | "110.100.IN-ADDR.ARPA" , |
| 390 | "111.100.IN-ADDR.ARPA" , |
| 391 | "112.100.IN-ADDR.ARPA" , |
| 392 | "113.100.IN-ADDR.ARPA" , |
| 393 | "114.100.IN-ADDR.ARPA" , |
| 394 | "115.100.IN-ADDR.ARPA" , |
| 395 | "116.100.IN-ADDR.ARPA" , |
| 396 | "117.100.IN-ADDR.ARPA" , |
| 397 | "118.100.IN-ADDR.ARPA" , |
| 398 | "119.100.IN-ADDR.ARPA" , |
| 399 | "120.100.IN-ADDR.ARPA" , |
| 400 | "121.100.IN-ADDR.ARPA" , |
| 401 | "122.100.IN-ADDR.ARPA" , |
| 402 | "123.100.IN-ADDR.ARPA" , |
| 403 | "124.100.IN-ADDR.ARPA" , |
| 404 | "125.100.IN-ADDR.ARPA" , |
| 405 | "126.100.IN-ADDR.ARPA" , |
| 406 | "127.100.IN-ADDR.ARPA" , |
| 407 | |
| 408 | /* RFC 5735 and RFC 5737 */ |
| 409 | "0.IN-ADDR.ARPA" , /* THIS NETWORK */ |
| 410 | "127.IN-ADDR.ARPA" , /* LOOPBACK */ |
| 411 | "254.169.IN-ADDR.ARPA" , /* LINK LOCAL */ |
| 412 | "2.0.192.IN-ADDR.ARPA" , /* TEST NET */ |
| 413 | "100.51.198.IN-ADDR.ARPA" , /* TEST NET 2 */ |
| 414 | "113.0.203.IN-ADDR.ARPA" , /* TEST NET 3 */ |
| 415 | "255.255.255.255.IN-ADDR.ARPA" , /* BROADCAST */ |
| 416 | |
| 417 | /* Local IPv6 Unicast Addresses */ |
| 418 | "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA" , |
| 419 | "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA" , |
| 420 | /* LOCALLY ASSIGNED LOCAL ADDRESS SCOPE */ |
| 421 | "D.F.IP6.ARPA" , |
| 422 | "8.E.F.IP6.ARPA" , /* LINK LOCAL */ |
| 423 | "9.E.F.IP6.ARPA" , /* LINK LOCAL */ |
| 424 | "A.E.F.IP6.ARPA" , /* LINK LOCAL */ |
| 425 | "B.E.F.IP6.ARPA" , /* LINK LOCAL */ |
| 426 | |
| 427 | /* Example Prefix, RFC 3849. */ |
| 428 | "8.B.D.0.1.0.0.2.IP6.ARPA" , |
| 429 | |
| 430 | /* RFC 7534 */ |
| 431 | "EMPTY.AS112.ARPA" , |
| 432 | |
| 433 | /* RFC 8375 */ |
| 434 | "HOME.ARPA" , |
| 435 | |
| 436 | NULL |
| 437 | }; |
| 438 | |
| 439 | ISC_PLATFORM_NORETURN_PRE static void |
| 440 | fatal(const char *msg, isc_result_t result) ISC_PLATFORM_NORETURN_POST; |
| 441 | |
| 442 | static void |
| 443 | named_server_reload(isc_task_t *task, isc_event_t *event); |
| 444 | |
| 445 | static isc_result_t |
| 446 | ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config, |
| 447 | cfg_aclconfctx_t *actx, isc_mem_t *mctx, |
| 448 | uint16_t family, ns_listenelt_t **target); |
| 449 | static isc_result_t |
| 450 | ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config, |
| 451 | cfg_aclconfctx_t *actx, isc_mem_t *mctx, |
| 452 | uint16_t family, ns_listenlist_t **target); |
| 453 | |
| 454 | static isc_result_t |
| 455 | configure_forward(const cfg_obj_t *config, dns_view_t *view, |
| 456 | const dns_name_t *origin, const cfg_obj_t *forwarders, |
| 457 | const cfg_obj_t *forwardtype); |
| 458 | |
| 459 | static isc_result_t |
| 460 | configure_alternates(const cfg_obj_t *config, dns_view_t *view, |
| 461 | const cfg_obj_t *alternates); |
| 462 | |
| 463 | static isc_result_t |
| 464 | configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig, |
| 465 | const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view, |
| 466 | dns_viewlist_t *viewlist, cfg_aclconfctx_t *aclconf, |
| 467 | bool added, bool old_rpz_ok, |
| 468 | bool modify); |
| 469 | |
| 470 | static isc_result_t |
| 471 | configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig, |
| 472 | isc_mem_t *mctx, cfg_aclconfctx_t *actx); |
| 473 | |
| 474 | static isc_result_t |
| 475 | add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx); |
| 476 | |
| 477 | static void |
| 478 | end_reserved_dispatches(named_server_t *server, bool all); |
| 479 | |
| 480 | static void |
| 481 | newzone_cfgctx_destroy(void **cfgp); |
| 482 | |
| 483 | static inline isc_result_t |
| 484 | putstr(isc_buffer_t **b, const char *str); |
| 485 | |
| 486 | static isc_result_t |
| 487 | putmem(isc_buffer_t **b, const char *str, size_t len); |
| 488 | |
| 489 | static isc_result_t |
| 490 | putuint8(isc_buffer_t **b, uint8_t val); |
| 491 | |
| 492 | static inline isc_result_t |
| 493 | putnull(isc_buffer_t **b); |
| 494 | |
| 495 | static int |
| 496 | count_zones(const cfg_obj_t *conf); |
| 497 | |
| 498 | #ifdef HAVE_LMDB |
| 499 | static isc_result_t |
| 500 | migrate_nzf(dns_view_t *view); |
| 501 | |
| 502 | static isc_result_t |
| 503 | nzd_writable(dns_view_t *view); |
| 504 | |
| 505 | static isc_result_t |
| 506 | nzd_open(dns_view_t *view, unsigned int flags, MDB_txn **txnp, MDB_dbi *dbi); |
| 507 | |
| 508 | static isc_result_t |
| 509 | nzd_env_reopen(dns_view_t *view); |
| 510 | |
| 511 | static void |
| 512 | nzd_env_close(dns_view_t *view); |
| 513 | |
| 514 | static isc_result_t |
| 515 | nzd_close(MDB_txn **txnp, bool commit); |
| 516 | |
| 517 | static isc_result_t |
| 518 | nzd_count(dns_view_t *view, int *countp); |
| 519 | #else |
| 520 | static isc_result_t |
| 521 | nzf_append(dns_view_t *view, const cfg_obj_t *zconfig); |
| 522 | #endif |
| 523 | |
| 524 | /*% |
| 525 | * Configure a single view ACL at '*aclp'. Get its configuration from |
| 526 | * 'vconfig' (for per-view configuration) and maybe from 'config' |
| 527 | */ |
| 528 | static isc_result_t |
| 529 | configure_view_acl(const cfg_obj_t *vconfig, const cfg_obj_t *config, |
| 530 | const cfg_obj_t *gconfig, const char *aclname, |
| 531 | const char *acltuplename, cfg_aclconfctx_t *actx, |
| 532 | isc_mem_t *mctx, dns_acl_t **aclp) |
| 533 | { |
| 534 | isc_result_t result; |
| 535 | const cfg_obj_t *maps[4]; |
| 536 | const cfg_obj_t *aclobj = NULL; |
| 537 | int i = 0; |
| 538 | |
| 539 | if (*aclp != NULL) { |
| 540 | dns_acl_detach(aclp); |
| 541 | } |
| 542 | if (vconfig != NULL) { |
| 543 | maps[i++] = cfg_tuple_get(vconfig, "options" ); |
| 544 | } |
| 545 | if (config != NULL) { |
| 546 | const cfg_obj_t *options = NULL; |
| 547 | (void)cfg_map_get(config, "options" , &options); |
| 548 | if (options != NULL) { |
| 549 | maps[i++] = options; |
| 550 | } |
| 551 | } |
| 552 | if (gconfig != NULL) { |
| 553 | const cfg_obj_t *options = NULL; |
| 554 | (void)cfg_map_get(gconfig, "options" , &options); |
| 555 | if (options != NULL) { |
| 556 | maps[i++] = options; |
| 557 | } |
| 558 | } |
| 559 | maps[i] = NULL; |
| 560 | |
| 561 | (void)named_config_get(maps, aclname, &aclobj); |
| 562 | if (aclobj == NULL) { |
| 563 | /* |
| 564 | * No value available. *aclp == NULL. |
| 565 | */ |
| 566 | return (ISC_R_SUCCESS); |
| 567 | } |
| 568 | |
| 569 | if (acltuplename != NULL) { |
| 570 | /* |
| 571 | * If the ACL is given in an optional tuple, retrieve it. |
| 572 | * The parser should have ensured that a valid object be |
| 573 | * returned. |
| 574 | */ |
| 575 | aclobj = cfg_tuple_get(aclobj, acltuplename); |
| 576 | } |
| 577 | |
| 578 | result = cfg_acl_fromconfig(aclobj, config, named_g_lctx, |
| 579 | actx, mctx, 0, aclp); |
| 580 | |
| 581 | return (result); |
| 582 | } |
| 583 | |
| 584 | /*% |
| 585 | * Configure a sortlist at '*aclp'. Essentially the same as |
| 586 | * configure_view_acl() except it calls cfg_acl_fromconfig with a |
| 587 | * nest_level value of 2. |
| 588 | */ |
| 589 | static isc_result_t |
| 590 | configure_view_sortlist(const cfg_obj_t *vconfig, const cfg_obj_t *config, |
| 591 | cfg_aclconfctx_t *actx, isc_mem_t *mctx, |
| 592 | dns_acl_t **aclp) |
| 593 | { |
| 594 | isc_result_t result; |
| 595 | const cfg_obj_t *maps[3]; |
| 596 | const cfg_obj_t *aclobj = NULL; |
| 597 | int i = 0; |
| 598 | |
| 599 | if (*aclp != NULL) |
| 600 | dns_acl_detach(aclp); |
| 601 | if (vconfig != NULL) |
| 602 | maps[i++] = cfg_tuple_get(vconfig, "options" ); |
| 603 | if (config != NULL) { |
| 604 | const cfg_obj_t *options = NULL; |
| 605 | (void)cfg_map_get(config, "options" , &options); |
| 606 | if (options != NULL) |
| 607 | maps[i++] = options; |
| 608 | } |
| 609 | maps[i] = NULL; |
| 610 | |
| 611 | (void)named_config_get(maps, "sortlist" , &aclobj); |
| 612 | if (aclobj == NULL) |
| 613 | return (ISC_R_SUCCESS); |
| 614 | |
| 615 | /* |
| 616 | * Use a nest level of 3 for the "top level" of the sortlist; |
| 617 | * this means each entry in the top three levels will be stored |
| 618 | * as lists of separate, nested ACLs, rather than merged together |
| 619 | * into IP tables as is usually done with ACLs. |
| 620 | */ |
| 621 | result = cfg_acl_fromconfig(aclobj, config, named_g_lctx, |
| 622 | actx, mctx, 3, aclp); |
| 623 | |
| 624 | return (result); |
| 625 | } |
| 626 | |
| 627 | static isc_result_t |
| 628 | configure_view_nametable(const cfg_obj_t *vconfig, const cfg_obj_t *config, |
| 629 | const char *confname, const char *conftuplename, |
| 630 | isc_mem_t *mctx, dns_rbt_t **rbtp) |
| 631 | { |
| 632 | isc_result_t result; |
| 633 | const cfg_obj_t *maps[3]; |
| 634 | const cfg_obj_t *obj = NULL; |
| 635 | const cfg_listelt_t *element; |
| 636 | int i = 0; |
| 637 | dns_fixedname_t fixed; |
| 638 | dns_name_t *name; |
| 639 | isc_buffer_t b; |
| 640 | const char *str; |
| 641 | const cfg_obj_t *nameobj; |
| 642 | |
| 643 | if (*rbtp != NULL) |
| 644 | dns_rbt_destroy(rbtp); |
| 645 | if (vconfig != NULL) |
| 646 | maps[i++] = cfg_tuple_get(vconfig, "options" ); |
| 647 | if (config != NULL) { |
| 648 | const cfg_obj_t *options = NULL; |
| 649 | (void)cfg_map_get(config, "options" , &options); |
| 650 | if (options != NULL) |
| 651 | maps[i++] = options; |
| 652 | } |
| 653 | maps[i] = NULL; |
| 654 | |
| 655 | (void)named_config_get(maps, confname, &obj); |
| 656 | if (obj == NULL) |
| 657 | /* |
| 658 | * No value available. *rbtp == NULL. |
| 659 | */ |
| 660 | return (ISC_R_SUCCESS); |
| 661 | |
| 662 | if (conftuplename != NULL) { |
| 663 | obj = cfg_tuple_get(obj, conftuplename); |
| 664 | if (cfg_obj_isvoid(obj)) |
| 665 | return (ISC_R_SUCCESS); |
| 666 | } |
| 667 | |
| 668 | result = dns_rbt_create(mctx, NULL, NULL, rbtp); |
| 669 | if (result != ISC_R_SUCCESS) |
| 670 | return (result); |
| 671 | |
| 672 | name = dns_fixedname_initname(&fixed); |
| 673 | for (element = cfg_list_first(obj); |
| 674 | element != NULL; |
| 675 | element = cfg_list_next(element)) { |
| 676 | nameobj = cfg_listelt_value(element); |
| 677 | str = cfg_obj_asstring(nameobj); |
| 678 | isc_buffer_constinit(&b, str, strlen(str)); |
| 679 | isc_buffer_add(&b, strlen(str)); |
| 680 | CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL)); |
| 681 | /* |
| 682 | * We don't need the node data, but need to set dummy data to |
| 683 | * avoid a partial match with an empty node. For example, if |
| 684 | * we have foo.example.com and bar.example.com, we'd get a match |
| 685 | * for baz.example.com, which is not the expected result. |
| 686 | * We simply use (void *)1 as the dummy data. |
| 687 | */ |
| 688 | result = dns_rbt_addname(*rbtp, name, (void *)1); |
| 689 | if (result != ISC_R_SUCCESS) { |
| 690 | cfg_obj_log(nameobj, named_g_lctx, ISC_LOG_ERROR, |
| 691 | "failed to add %s for %s: %s" , |
| 692 | str, confname, isc_result_totext(result)); |
| 693 | goto cleanup; |
| 694 | } |
| 695 | |
| 696 | } |
| 697 | |
| 698 | return (result); |
| 699 | |
| 700 | cleanup: |
| 701 | dns_rbt_destroy(rbtp); |
| 702 | return (result); |
| 703 | |
| 704 | } |
| 705 | |
| 706 | static isc_result_t |
| 707 | dstkey_fromconfig(const cfg_obj_t *vconfig, const cfg_obj_t *key, |
| 708 | bool managed, dst_key_t **target, isc_mem_t *mctx) |
| 709 | { |
| 710 | dns_rdataclass_t viewclass; |
| 711 | dns_rdata_dnskey_t keystruct; |
| 712 | uint32_t flags, proto, alg; |
| 713 | const char *keystr, *keynamestr; |
| 714 | unsigned char keydata[4096]; |
| 715 | isc_buffer_t keydatabuf; |
| 716 | unsigned char rrdata[4096]; |
| 717 | isc_buffer_t rrdatabuf; |
| 718 | isc_region_t r; |
| 719 | dns_fixedname_t fkeyname; |
| 720 | dns_name_t *keyname; |
| 721 | isc_buffer_t namebuf; |
| 722 | isc_result_t result; |
| 723 | dst_key_t *dstkey = NULL; |
| 724 | |
| 725 | INSIST(target != NULL && *target == NULL); |
| 726 | |
| 727 | flags = cfg_obj_asuint32(cfg_tuple_get(key, "flags" )); |
| 728 | proto = cfg_obj_asuint32(cfg_tuple_get(key, "protocol" )); |
| 729 | alg = cfg_obj_asuint32(cfg_tuple_get(key, "algorithm" )); |
| 730 | keyname = dns_fixedname_name(&fkeyname); |
| 731 | keynamestr = cfg_obj_asstring(cfg_tuple_get(key, "name" )); |
| 732 | |
| 733 | if (managed) { |
| 734 | const char *initmethod; |
| 735 | initmethod = cfg_obj_asstring(cfg_tuple_get(key, "init" )); |
| 736 | |
| 737 | if (strcasecmp(initmethod, "initial-key" ) != 0) { |
| 738 | cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR, |
| 739 | "managed key '%s': " |
| 740 | "invalid initialization method '%s'" , |
| 741 | keynamestr, initmethod); |
| 742 | result = ISC_R_FAILURE; |
| 743 | goto cleanup; |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | if (vconfig == NULL) |
| 748 | viewclass = dns_rdataclass_in; |
| 749 | else { |
| 750 | const cfg_obj_t *classobj = cfg_tuple_get(vconfig, "class" ); |
| 751 | CHECK(named_config_getclass(classobj, dns_rdataclass_in, |
| 752 | &viewclass)); |
| 753 | } |
| 754 | keystruct.common.rdclass = viewclass; |
| 755 | keystruct.common.rdtype = dns_rdatatype_dnskey; |
| 756 | /* |
| 757 | * The key data in keystruct is not dynamically allocated. |
| 758 | */ |
| 759 | keystruct.mctx = NULL; |
| 760 | |
| 761 | ISC_LINK_INIT(&keystruct.common, link); |
| 762 | |
| 763 | if (flags > 0xffff) |
| 764 | CHECKM(ISC_R_RANGE, "key flags" ); |
| 765 | if (proto > 0xff) |
| 766 | CHECKM(ISC_R_RANGE, "key protocol" ); |
| 767 | if (alg > 0xff) |
| 768 | CHECKM(ISC_R_RANGE, "key algorithm" ); |
| 769 | keystruct.flags = (uint16_t)flags; |
| 770 | keystruct.protocol = (uint8_t)proto; |
| 771 | keystruct.algorithm = (uint8_t)alg; |
| 772 | |
| 773 | isc_buffer_init(&keydatabuf, keydata, sizeof(keydata)); |
| 774 | isc_buffer_init(&rrdatabuf, rrdata, sizeof(rrdata)); |
| 775 | |
| 776 | keystr = cfg_obj_asstring(cfg_tuple_get(key, "key" )); |
| 777 | CHECK(isc_base64_decodestring(keystr, &keydatabuf)); |
| 778 | isc_buffer_usedregion(&keydatabuf, &r); |
| 779 | keystruct.datalen = r.length; |
| 780 | keystruct.data = r.base; |
| 781 | |
| 782 | if ((keystruct.algorithm == DST_ALG_RSASHA1) && |
| 783 | r.length > 1 && r.base[0] == 1 && r.base[1] == 3) |
| 784 | cfg_obj_log(key, named_g_lctx, ISC_LOG_WARNING, |
| 785 | "%s key '%s' has a weak exponent" , |
| 786 | managed ? "managed" : "trusted" , |
| 787 | keynamestr); |
| 788 | |
| 789 | CHECK(dns_rdata_fromstruct(NULL, |
| 790 | keystruct.common.rdclass, |
| 791 | keystruct.common.rdtype, |
| 792 | &keystruct, &rrdatabuf)); |
| 793 | dns_fixedname_init(&fkeyname); |
| 794 | isc_buffer_constinit(&namebuf, keynamestr, strlen(keynamestr)); |
| 795 | isc_buffer_add(&namebuf, strlen(keynamestr)); |
| 796 | CHECK(dns_name_fromtext(keyname, &namebuf, dns_rootname, 0, NULL)); |
| 797 | CHECK(dst_key_fromdns(keyname, viewclass, &rrdatabuf, |
| 798 | mctx, &dstkey)); |
| 799 | |
| 800 | *target = dstkey; |
| 801 | return (ISC_R_SUCCESS); |
| 802 | |
| 803 | cleanup: |
| 804 | if (result == DST_R_NOCRYPTO) { |
| 805 | cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR, |
| 806 | "ignoring %s key for '%s': no crypto support" , |
| 807 | managed ? "managed" : "trusted" , |
| 808 | keynamestr); |
| 809 | } else if (result == DST_R_UNSUPPORTEDALG) { |
| 810 | cfg_obj_log(key, named_g_lctx, ISC_LOG_WARNING, |
| 811 | "skipping %s key for '%s': %s" , |
| 812 | managed ? "managed" : "trusted" , |
| 813 | keynamestr, isc_result_totext(result)); |
| 814 | } else { |
| 815 | cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR, |
| 816 | "configuring %s key for '%s': %s" , |
| 817 | managed ? "managed" : "trusted" , |
| 818 | keynamestr, isc_result_totext(result)); |
| 819 | result = ISC_R_FAILURE; |
| 820 | } |
| 821 | |
| 822 | if (dstkey != NULL) |
| 823 | dst_key_free(&dstkey); |
| 824 | |
| 825 | return (result); |
| 826 | } |
| 827 | |
| 828 | /* |
| 829 | * Load keys from configuration into key table. If 'keyname' is specified, |
| 830 | * only load keys matching that name. If 'managed' is true, load the key as |
| 831 | * an initializing key. |
| 832 | */ |
| 833 | static isc_result_t |
| 834 | load_view_keys(const cfg_obj_t *keys, const cfg_obj_t *vconfig, |
| 835 | dns_view_t *view, bool managed, |
| 836 | const dns_name_t *keyname, isc_mem_t *mctx) |
| 837 | { |
| 838 | const cfg_listelt_t *elt, *elt2; |
| 839 | const cfg_obj_t *key, *keylist; |
| 840 | dst_key_t *dstkey = NULL; |
| 841 | isc_result_t result; |
| 842 | dns_keytable_t *secroots = NULL; |
| 843 | |
| 844 | CHECK(dns_view_getsecroots(view, &secroots)); |
| 845 | |
| 846 | for (elt = cfg_list_first(keys); |
| 847 | elt != NULL; |
| 848 | elt = cfg_list_next(elt)) |
| 849 | { |
| 850 | keylist = cfg_listelt_value(elt); |
| 851 | |
| 852 | for (elt2 = cfg_list_first(keylist); |
| 853 | elt2 != NULL; |
| 854 | elt2 = cfg_list_next(elt2)) |
| 855 | { |
| 856 | key = cfg_listelt_value(elt2); |
| 857 | result = dstkey_fromconfig(vconfig, key, managed, |
| 858 | &dstkey, mctx); |
| 859 | if (result == DST_R_UNSUPPORTEDALG) { |
| 860 | result = ISC_R_SUCCESS; |
| 861 | continue; |
| 862 | } |
| 863 | if (result != ISC_R_SUCCESS) { |
| 864 | goto cleanup; |
| 865 | } |
| 866 | |
| 867 | /* |
| 868 | * If keyname was specified, we only add that key. |
| 869 | */ |
| 870 | if (keyname != NULL && |
| 871 | !dns_name_equal(keyname, dst_key_name(dstkey))) |
| 872 | { |
| 873 | dst_key_free(&dstkey); |
| 874 | continue; |
| 875 | } |
| 876 | |
| 877 | /* |
| 878 | * This key is taken from the configuration, so |
| 879 | * if it's a managed key then it's an |
| 880 | * initializing key; that's why 'managed' |
| 881 | * is duplicated below. |
| 882 | */ |
| 883 | CHECK(dns_keytable_add(secroots, managed, |
| 884 | managed, &dstkey)); |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | cleanup: |
| 889 | if (dstkey != NULL) { |
| 890 | dst_key_free(&dstkey); |
| 891 | } |
| 892 | if (secroots != NULL) { |
| 893 | dns_keytable_detach(&secroots); |
| 894 | } |
| 895 | if (result == DST_R_NOCRYPTO) { |
| 896 | result = ISC_R_SUCCESS; |
| 897 | } |
| 898 | return (result); |
| 899 | } |
| 900 | |
| 901 | /*% |
| 902 | * Check whether a key has been successfully loaded. |
| 903 | */ |
| 904 | static bool |
| 905 | keyloaded(dns_view_t *view, const dns_name_t *name) { |
| 906 | isc_result_t result; |
| 907 | dns_keytable_t *secroots = NULL; |
| 908 | dns_keynode_t *keynode = NULL; |
| 909 | |
| 910 | result = dns_view_getsecroots(view, &secroots); |
| 911 | if (result != ISC_R_SUCCESS) |
| 912 | return (false); |
| 913 | |
| 914 | result = dns_keytable_find(secroots, name, &keynode); |
| 915 | |
| 916 | if (keynode != NULL) |
| 917 | dns_keytable_detachkeynode(secroots, &keynode); |
| 918 | if (secroots != NULL) |
| 919 | dns_keytable_detach(&secroots); |
| 920 | |
| 921 | return (result == ISC_R_SUCCESS); |
| 922 | } |
| 923 | |
| 924 | /*% |
| 925 | * Configure DNSSEC keys for a view. |
| 926 | * |
| 927 | * The per-view configuration values and the server-global defaults are read |
| 928 | * from 'vconfig' and 'config'. |
| 929 | */ |
| 930 | static isc_result_t |
| 931 | configure_view_dnsseckeys(dns_view_t *view, const cfg_obj_t *vconfig, |
| 932 | const cfg_obj_t *config, const cfg_obj_t *bindkeys, |
| 933 | bool auto_root, isc_mem_t *mctx) |
| 934 | { |
| 935 | isc_result_t result = ISC_R_SUCCESS; |
| 936 | const cfg_obj_t *view_keys = NULL; |
| 937 | const cfg_obj_t *global_keys = NULL; |
| 938 | const cfg_obj_t *view_managed_keys = NULL; |
| 939 | const cfg_obj_t *global_managed_keys = NULL; |
| 940 | const cfg_obj_t *maps[4]; |
| 941 | const cfg_obj_t *voptions = NULL; |
| 942 | const cfg_obj_t *options = NULL; |
| 943 | const cfg_obj_t *obj = NULL; |
| 944 | const char *directory; |
| 945 | int i = 0; |
| 946 | |
| 947 | /* We don't need trust anchors for the _bind view */ |
| 948 | if (strcmp(view->name, "_bind" ) == 0 && |
| 949 | view->rdclass == dns_rdataclass_chaos) |
| 950 | { |
| 951 | return (ISC_R_SUCCESS); |
| 952 | } |
| 953 | |
| 954 | if (vconfig != NULL) { |
| 955 | voptions = cfg_tuple_get(vconfig, "options" ); |
| 956 | if (voptions != NULL) { |
| 957 | (void) cfg_map_get(voptions, "trusted-keys" , |
| 958 | &view_keys); |
| 959 | (void) cfg_map_get(voptions, "managed-keys" , |
| 960 | &view_managed_keys); |
| 961 | maps[i++] = voptions; |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | if (config != NULL) { |
| 966 | (void)cfg_map_get(config, "trusted-keys" , &global_keys); |
| 967 | (void)cfg_map_get(config, "managed-keys" , &global_managed_keys); |
| 968 | (void)cfg_map_get(config, "options" , &options); |
| 969 | if (options != NULL) { |
| 970 | maps[i++] = options; |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | maps[i++] = named_g_defaults; |
| 975 | maps[i] = NULL; |
| 976 | |
| 977 | result = dns_view_initsecroots(view, mctx); |
| 978 | if (result != ISC_R_SUCCESS) { |
| 979 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 980 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 981 | "couldn't create keytable" ); |
| 982 | return (ISC_R_UNEXPECTED); |
| 983 | } |
| 984 | |
| 985 | result = dns_view_initntatable(view, named_g_taskmgr, named_g_timermgr); |
| 986 | if (result != ISC_R_SUCCESS) { |
| 987 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 988 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 989 | "couldn't create NTA table" ); |
| 990 | return (ISC_R_UNEXPECTED); |
| 991 | } |
| 992 | |
| 993 | if (auto_root && view->rdclass == dns_rdataclass_in) { |
| 994 | const cfg_obj_t *builtin_keys = NULL; |
| 995 | const cfg_obj_t *builtin_managed_keys = NULL; |
| 996 | |
| 997 | /* |
| 998 | * If bind.keys exists and is populated, it overrides |
| 999 | * the managed-keys clause hard-coded in named_g_config. |
| 1000 | */ |
| 1001 | if (bindkeys != NULL) { |
| 1002 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY, |
| 1003 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 1004 | "obtaining root key for view %s " |
| 1005 | "from '%s'" , |
| 1006 | view->name, named_g_server->bindkeysfile); |
| 1007 | |
| 1008 | (void)cfg_map_get(bindkeys, "trusted-keys" , |
| 1009 | &builtin_keys); |
| 1010 | (void)cfg_map_get(bindkeys, "managed-keys" , |
| 1011 | &builtin_managed_keys); |
| 1012 | |
| 1013 | if ((builtin_keys == NULL) && |
| 1014 | (builtin_managed_keys == NULL)) |
| 1015 | isc_log_write(named_g_lctx, |
| 1016 | DNS_LOGCATEGORY_SECURITY, |
| 1017 | NAMED_LOGMODULE_SERVER, |
| 1018 | ISC_LOG_WARNING, |
| 1019 | "dnssec-validation auto: " |
| 1020 | "WARNING: root zone key " |
| 1021 | "not found" ); |
| 1022 | } |
| 1023 | |
| 1024 | if ((builtin_keys == NULL) && |
| 1025 | (builtin_managed_keys == NULL)) |
| 1026 | { |
| 1027 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY, |
| 1028 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 1029 | "using built-in root key for view %s" , |
| 1030 | view->name); |
| 1031 | |
| 1032 | (void)cfg_map_get(named_g_config, "trusted-keys" , |
| 1033 | &builtin_keys); |
| 1034 | (void)cfg_map_get(named_g_config, "managed-keys" , |
| 1035 | &builtin_managed_keys); |
| 1036 | } |
| 1037 | |
| 1038 | if (builtin_keys != NULL) |
| 1039 | CHECK(load_view_keys(builtin_keys, vconfig, view, |
| 1040 | false, dns_rootname, mctx)); |
| 1041 | if (builtin_managed_keys != NULL) |
| 1042 | CHECK(load_view_keys(builtin_managed_keys, vconfig, |
| 1043 | view, true, dns_rootname, |
| 1044 | mctx)); |
| 1045 | |
| 1046 | if (!keyloaded(view, dns_rootname)) { |
| 1047 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY, |
| 1048 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 1049 | "root key not loaded" ); |
| 1050 | result = ISC_R_FAILURE; |
| 1051 | goto cleanup; |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | CHECK(load_view_keys(view_keys, vconfig, view, false, |
| 1056 | NULL, mctx)); |
| 1057 | CHECK(load_view_keys(view_managed_keys, vconfig, view, true, |
| 1058 | NULL, mctx)); |
| 1059 | |
| 1060 | if (view->rdclass == dns_rdataclass_in) { |
| 1061 | CHECK(load_view_keys(global_keys, vconfig, view, false, |
| 1062 | NULL, mctx)); |
| 1063 | CHECK(load_view_keys(global_managed_keys, vconfig, view, |
| 1064 | true, NULL, mctx)); |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * Add key zone for managed keys. |
| 1069 | */ |
| 1070 | obj = NULL; |
| 1071 | (void)named_config_get(maps, "managed-keys-directory" , &obj); |
| 1072 | directory = (obj != NULL ? cfg_obj_asstring(obj) : NULL); |
| 1073 | if (directory != NULL) |
| 1074 | result = isc_file_isdirectory(directory); |
| 1075 | if (result != ISC_R_SUCCESS) { |
| 1076 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY, |
| 1077 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 1078 | "invalid managed-keys-directory %s: %s" , |
| 1079 | directory, isc_result_totext(result)); |
| 1080 | goto cleanup; |
| 1081 | |
| 1082 | } else if (directory != NULL) { |
| 1083 | if (!isc_file_isdirwritable(directory)) { |
| 1084 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 1085 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 1086 | "managed-keys-directory '%s' " |
| 1087 | "is not writable" , directory); |
| 1088 | result = ISC_R_NOPERM; |
| 1089 | goto cleanup; |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | CHECK(add_keydata_zone(view, directory, named_g_mctx)); |
| 1094 | |
| 1095 | cleanup: |
| 1096 | return (result); |
| 1097 | } |
| 1098 | |
| 1099 | static isc_result_t |
| 1100 | mustbesecure(const cfg_obj_t *mbs, dns_resolver_t *resolver) { |
| 1101 | const cfg_listelt_t *element; |
| 1102 | const cfg_obj_t *obj; |
| 1103 | const char *str; |
| 1104 | dns_fixedname_t fixed; |
| 1105 | dns_name_t *name; |
| 1106 | bool value; |
| 1107 | isc_result_t result; |
| 1108 | isc_buffer_t b; |
| 1109 | |
| 1110 | name = dns_fixedname_initname(&fixed); |
| 1111 | for (element = cfg_list_first(mbs); |
| 1112 | element != NULL; |
| 1113 | element = cfg_list_next(element)) |
| 1114 | { |
| 1115 | obj = cfg_listelt_value(element); |
| 1116 | str = cfg_obj_asstring(cfg_tuple_get(obj, "name" )); |
| 1117 | isc_buffer_constinit(&b, str, strlen(str)); |
| 1118 | isc_buffer_add(&b, strlen(str)); |
| 1119 | CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL)); |
| 1120 | value = cfg_obj_asboolean(cfg_tuple_get(obj, "value" )); |
| 1121 | CHECK(dns_resolver_setmustbesecure(resolver, name, value)); |
| 1122 | } |
| 1123 | |
| 1124 | result = ISC_R_SUCCESS; |
| 1125 | |
| 1126 | cleanup: |
| 1127 | return (result); |
| 1128 | } |
| 1129 | |
| 1130 | /*% |
| 1131 | * Get a dispatch appropriate for the resolver of a given view. |
| 1132 | */ |
| 1133 | static isc_result_t |
| 1134 | get_view_querysource_dispatch(const cfg_obj_t **maps, int af, |
| 1135 | dns_dispatch_t **dispatchp, isc_dscp_t *dscpp, |
| 1136 | bool is_firstview) |
| 1137 | { |
| 1138 | isc_result_t result = ISC_R_FAILURE; |
| 1139 | dns_dispatch_t *disp; |
| 1140 | isc_sockaddr_t sa; |
| 1141 | unsigned int attrs, attrmask; |
| 1142 | const cfg_obj_t *obj = NULL; |
| 1143 | unsigned int maxdispatchbuffers = UDPBUFFERS; |
| 1144 | isc_dscp_t dscp = -1; |
| 1145 | |
| 1146 | switch (af) { |
| 1147 | case AF_INET: |
| 1148 | result = named_config_get(maps, "query-source" , &obj); |
| 1149 | INSIST(result == ISC_R_SUCCESS); |
| 1150 | break; |
| 1151 | case AF_INET6: |
| 1152 | result = named_config_get(maps, "query-source-v6" , &obj); |
| 1153 | INSIST(result == ISC_R_SUCCESS); |
| 1154 | break; |
| 1155 | default: |
| 1156 | INSIST(0); |
| 1157 | ISC_UNREACHABLE(); |
| 1158 | } |
| 1159 | |
| 1160 | sa = *(cfg_obj_assockaddr(obj)); |
| 1161 | INSIST(isc_sockaddr_pf(&sa) == af); |
| 1162 | |
| 1163 | dscp = cfg_obj_getdscp(obj); |
| 1164 | if (dscp != -1 && dscpp != NULL) |
| 1165 | *dscpp = dscp; |
| 1166 | |
| 1167 | /* |
| 1168 | * If we don't support this address family, we're done! |
| 1169 | */ |
| 1170 | switch (af) { |
| 1171 | case AF_INET: |
| 1172 | result = isc_net_probeipv4(); |
| 1173 | break; |
| 1174 | case AF_INET6: |
| 1175 | result = isc_net_probeipv6(); |
| 1176 | break; |
| 1177 | default: |
| 1178 | INSIST(0); |
| 1179 | ISC_UNREACHABLE(); |
| 1180 | } |
| 1181 | if (result != ISC_R_SUCCESS) |
| 1182 | return (ISC_R_SUCCESS); |
| 1183 | |
| 1184 | /* |
| 1185 | * Try to find a dispatcher that we can share. |
| 1186 | */ |
| 1187 | attrs = 0; |
| 1188 | attrs |= DNS_DISPATCHATTR_UDP; |
| 1189 | switch (af) { |
| 1190 | case AF_INET: |
| 1191 | attrs |= DNS_DISPATCHATTR_IPV4; |
| 1192 | break; |
| 1193 | case AF_INET6: |
| 1194 | attrs |= DNS_DISPATCHATTR_IPV6; |
| 1195 | break; |
| 1196 | } |
| 1197 | if (isc_sockaddr_getport(&sa) == 0) { |
| 1198 | attrs |= DNS_DISPATCHATTR_EXCLUSIVE; |
| 1199 | maxdispatchbuffers = EXCLBUFFERS; |
| 1200 | } else { |
| 1201 | INSIST(obj != NULL); |
| 1202 | if (is_firstview) { |
| 1203 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_INFO, |
| 1204 | "using specific query-source port " |
| 1205 | "suppresses port randomization and can be " |
| 1206 | "insecure." ); |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | attrmask = 0; |
| 1211 | attrmask |= DNS_DISPATCHATTR_UDP; |
| 1212 | attrmask |= DNS_DISPATCHATTR_TCP; |
| 1213 | attrmask |= DNS_DISPATCHATTR_IPV4; |
| 1214 | attrmask |= DNS_DISPATCHATTR_IPV6; |
| 1215 | |
| 1216 | disp = NULL; |
| 1217 | result = dns_dispatch_getudp(named_g_dispatchmgr, named_g_socketmgr, |
| 1218 | named_g_taskmgr, &sa, 4096, |
| 1219 | maxdispatchbuffers, 32768, 16411, 16433, |
| 1220 | attrs, attrmask, &disp); |
| 1221 | if (result != ISC_R_SUCCESS) { |
| 1222 | isc_sockaddr_t any; |
| 1223 | char buf[ISC_SOCKADDR_FORMATSIZE]; |
| 1224 | |
| 1225 | switch (af) { |
| 1226 | case AF_INET: |
| 1227 | isc_sockaddr_any(&any); |
| 1228 | break; |
| 1229 | case AF_INET6: |
| 1230 | isc_sockaddr_any6(&any); |
| 1231 | break; |
| 1232 | } |
| 1233 | if (isc_sockaddr_equal(&sa, &any)) |
| 1234 | return (ISC_R_SUCCESS); |
| 1235 | isc_sockaddr_format(&sa, buf, sizeof(buf)); |
| 1236 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 1237 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 1238 | "could not get query source dispatcher (%s)" , |
| 1239 | buf); |
| 1240 | return (result); |
| 1241 | } |
| 1242 | |
| 1243 | *dispatchp = disp; |
| 1244 | |
| 1245 | return (ISC_R_SUCCESS); |
| 1246 | } |
| 1247 | |
| 1248 | static isc_result_t |
| 1249 | configure_order(dns_order_t *order, const cfg_obj_t *ent) { |
| 1250 | dns_rdataclass_t rdclass; |
| 1251 | dns_rdatatype_t rdtype; |
| 1252 | const cfg_obj_t *obj; |
| 1253 | dns_fixedname_t fixed; |
| 1254 | unsigned int mode = 0; |
| 1255 | const char *str; |
| 1256 | isc_buffer_t b; |
| 1257 | isc_result_t result; |
| 1258 | bool addroot; |
| 1259 | |
| 1260 | result = named_config_getclass(cfg_tuple_get(ent, "class" ), |
| 1261 | dns_rdataclass_any, &rdclass); |
| 1262 | if (result != ISC_R_SUCCESS) |
| 1263 | return (result); |
| 1264 | |
| 1265 | result = named_config_gettype(cfg_tuple_get(ent, "type" ), |
| 1266 | dns_rdatatype_any, &rdtype); |
| 1267 | if (result != ISC_R_SUCCESS) |
| 1268 | return (result); |
| 1269 | |
| 1270 | obj = cfg_tuple_get(ent, "name" ); |
| 1271 | if (cfg_obj_isstring(obj)) |
| 1272 | str = cfg_obj_asstring(obj); |
| 1273 | else |
| 1274 | str = "*" ; |
| 1275 | addroot = (strcmp(str, "*" ) == 0); |
| 1276 | isc_buffer_constinit(&b, str, strlen(str)); |
| 1277 | isc_buffer_add(&b, strlen(str)); |
| 1278 | dns_fixedname_init(&fixed); |
| 1279 | result = dns_name_fromtext(dns_fixedname_name(&fixed), &b, |
| 1280 | dns_rootname, 0, NULL); |
| 1281 | if (result != ISC_R_SUCCESS) |
| 1282 | return (result); |
| 1283 | |
| 1284 | obj = cfg_tuple_get(ent, "ordering" ); |
| 1285 | INSIST(cfg_obj_isstring(obj)); |
| 1286 | str = cfg_obj_asstring(obj); |
| 1287 | if (!strcasecmp(str, "fixed" )) { |
| 1288 | #if DNS_RDATASET_FIXED |
| 1289 | mode = DNS_RDATASETATTR_FIXEDORDER; |
| 1290 | #else |
| 1291 | mode = DNS_RDATASETATTR_CYCLIC; |
| 1292 | #endif /* DNS_RDATASET_FIXED */ |
| 1293 | } else if (!strcasecmp(str, "random" )) { |
| 1294 | mode = DNS_RDATASETATTR_RANDOMIZE; |
| 1295 | } else if (!strcasecmp(str, "cyclic" )) { |
| 1296 | mode = DNS_RDATASETATTR_CYCLIC; |
| 1297 | } else if (!strcasecmp(str, "none" )) { |
| 1298 | mode = DNS_RDATASETATTR_NONE; |
| 1299 | } else { |
| 1300 | INSIST(0); |
| 1301 | ISC_UNREACHABLE(); |
| 1302 | } |
| 1303 | |
| 1304 | /* |
| 1305 | * "*" should match everything including the root (BIND 8 compat). |
| 1306 | * As dns_name_matcheswildcard(".", "*.") returns FALSE add a |
| 1307 | * explicit entry for "." when the name is "*". |
| 1308 | */ |
| 1309 | if (addroot) { |
| 1310 | result = dns_order_add(order, dns_rootname, |
| 1311 | rdtype, rdclass, mode); |
| 1312 | if (result != ISC_R_SUCCESS) |
| 1313 | return (result); |
| 1314 | } |
| 1315 | |
| 1316 | return (dns_order_add(order, dns_fixedname_name(&fixed), |
| 1317 | rdtype, rdclass, mode)); |
| 1318 | } |
| 1319 | |
| 1320 | static isc_result_t |
| 1321 | configure_peer(const cfg_obj_t *cpeer, isc_mem_t *mctx, dns_peer_t **peerp) { |
| 1322 | isc_netaddr_t na; |
| 1323 | dns_peer_t *peer; |
| 1324 | const cfg_obj_t *obj; |
| 1325 | const char *str; |
| 1326 | isc_result_t result; |
| 1327 | unsigned int prefixlen; |
| 1328 | |
| 1329 | cfg_obj_asnetprefix(cfg_map_getname(cpeer), &na, &prefixlen); |
| 1330 | |
| 1331 | peer = NULL; |
| 1332 | result = dns_peer_newprefix(mctx, &na, prefixlen, &peer); |
| 1333 | if (result != ISC_R_SUCCESS) |
| 1334 | return (result); |
| 1335 | |
| 1336 | obj = NULL; |
| 1337 | (void)cfg_map_get(cpeer, "bogus" , &obj); |
| 1338 | if (obj != NULL) |
| 1339 | CHECK(dns_peer_setbogus(peer, cfg_obj_asboolean(obj))); |
| 1340 | |
| 1341 | obj = NULL; |
| 1342 | (void)cfg_map_get(cpeer, "provide-ixfr" , &obj); |
| 1343 | if (obj != NULL) |
| 1344 | CHECK(dns_peer_setprovideixfr(peer, cfg_obj_asboolean(obj))); |
| 1345 | |
| 1346 | obj = NULL; |
| 1347 | (void)cfg_map_get(cpeer, "request-expire" , &obj); |
| 1348 | if (obj != NULL) |
| 1349 | CHECK(dns_peer_setrequestexpire(peer, cfg_obj_asboolean(obj))); |
| 1350 | |
| 1351 | obj = NULL; |
| 1352 | (void)cfg_map_get(cpeer, "request-ixfr" , &obj); |
| 1353 | if (obj != NULL) |
| 1354 | CHECK(dns_peer_setrequestixfr(peer, cfg_obj_asboolean(obj))); |
| 1355 | |
| 1356 | obj = NULL; |
| 1357 | (void)cfg_map_get(cpeer, "request-nsid" , &obj); |
| 1358 | if (obj != NULL) |
| 1359 | CHECK(dns_peer_setrequestnsid(peer, cfg_obj_asboolean(obj))); |
| 1360 | |
| 1361 | obj = NULL; |
| 1362 | (void)cfg_map_get(cpeer, "send-cookie" , &obj); |
| 1363 | if (obj != NULL) |
| 1364 | CHECK(dns_peer_setsendcookie(peer, cfg_obj_asboolean(obj))); |
| 1365 | |
| 1366 | obj = NULL; |
| 1367 | (void)cfg_map_get(cpeer, "edns" , &obj); |
| 1368 | if (obj != NULL) |
| 1369 | CHECK(dns_peer_setsupportedns(peer, cfg_obj_asboolean(obj))); |
| 1370 | |
| 1371 | obj = NULL; |
| 1372 | (void)cfg_map_get(cpeer, "edns-udp-size" , &obj); |
| 1373 | if (obj != NULL) { |
| 1374 | uint32_t udpsize = cfg_obj_asuint32(obj); |
| 1375 | if (udpsize < 512U) |
| 1376 | udpsize = 512U; |
| 1377 | if (udpsize > 4096U) |
| 1378 | udpsize = 4096U; |
| 1379 | CHECK(dns_peer_setudpsize(peer, (uint16_t)udpsize)); |
| 1380 | } |
| 1381 | |
| 1382 | obj = NULL; |
| 1383 | (void)cfg_map_get(cpeer, "edns-version" , &obj); |
| 1384 | if (obj != NULL) { |
| 1385 | uint32_t ednsversion = cfg_obj_asuint32(obj); |
| 1386 | if (ednsversion > 255U) |
| 1387 | ednsversion = 255U; |
| 1388 | CHECK(dns_peer_setednsversion(peer, (uint8_t)ednsversion)); |
| 1389 | } |
| 1390 | |
| 1391 | obj = NULL; |
| 1392 | (void)cfg_map_get(cpeer, "max-udp-size" , &obj); |
| 1393 | if (obj != NULL) { |
| 1394 | uint32_t udpsize = cfg_obj_asuint32(obj); |
| 1395 | if (udpsize < 512U) |
| 1396 | udpsize = 512U; |
| 1397 | if (udpsize > 4096U) |
| 1398 | udpsize = 4096U; |
| 1399 | CHECK(dns_peer_setmaxudp(peer, (uint16_t)udpsize)); |
| 1400 | } |
| 1401 | |
| 1402 | obj = NULL; |
| 1403 | (void)cfg_map_get(cpeer, "padding" , &obj); |
| 1404 | if (obj != NULL) { |
| 1405 | uint32_t padding = cfg_obj_asuint32(obj); |
| 1406 | if (padding > 512U) { |
| 1407 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 1408 | "server padding value cannot " |
| 1409 | "exceed 512: lowering" ); |
| 1410 | padding = 512U; |
| 1411 | } |
| 1412 | CHECK(dns_peer_setpadding(peer, (uint16_t)padding)); |
| 1413 | } |
| 1414 | |
| 1415 | obj = NULL; |
| 1416 | (void)cfg_map_get(cpeer, "tcp-only" , &obj); |
| 1417 | if (obj != NULL) |
| 1418 | CHECK(dns_peer_setforcetcp(peer, cfg_obj_asboolean(obj))); |
| 1419 | |
| 1420 | obj = NULL; |
| 1421 | (void)cfg_map_get(cpeer, "tcp-keepalive" , &obj); |
| 1422 | if (obj != NULL) |
| 1423 | CHECK(dns_peer_settcpkeepalive(peer, cfg_obj_asboolean(obj))); |
| 1424 | |
| 1425 | obj = NULL; |
| 1426 | (void)cfg_map_get(cpeer, "transfers" , &obj); |
| 1427 | if (obj != NULL) |
| 1428 | CHECK(dns_peer_settransfers(peer, cfg_obj_asuint32(obj))); |
| 1429 | |
| 1430 | obj = NULL; |
| 1431 | (void)cfg_map_get(cpeer, "transfer-format" , &obj); |
| 1432 | if (obj != NULL) { |
| 1433 | str = cfg_obj_asstring(obj); |
| 1434 | if (strcasecmp(str, "many-answers" ) == 0) { |
| 1435 | CHECK(dns_peer_settransferformat(peer, |
| 1436 | dns_many_answers)); |
| 1437 | } else if (strcasecmp(str, "one-answer" ) == 0) { |
| 1438 | CHECK(dns_peer_settransferformat(peer, |
| 1439 | dns_one_answer)); |
| 1440 | } else { |
| 1441 | INSIST(0); |
| 1442 | ISC_UNREACHABLE(); |
| 1443 | } |
| 1444 | } |
| 1445 | |
| 1446 | obj = NULL; |
| 1447 | (void)cfg_map_get(cpeer, "keys" , &obj); |
| 1448 | if (obj != NULL) { |
| 1449 | result = dns_peer_setkeybycharp(peer, cfg_obj_asstring(obj)); |
| 1450 | if (result != ISC_R_SUCCESS) |
| 1451 | goto cleanup; |
| 1452 | } |
| 1453 | |
| 1454 | obj = NULL; |
| 1455 | if (na.family == AF_INET) |
| 1456 | (void)cfg_map_get(cpeer, "transfer-source" , &obj); |
| 1457 | else |
| 1458 | (void)cfg_map_get(cpeer, "transfer-source-v6" , &obj); |
| 1459 | if (obj != NULL) { |
| 1460 | result = dns_peer_settransfersource(peer, |
| 1461 | cfg_obj_assockaddr(obj)); |
| 1462 | if (result != ISC_R_SUCCESS) |
| 1463 | goto cleanup; |
| 1464 | result = dns_peer_settransferdscp(peer, cfg_obj_getdscp(obj)); |
| 1465 | if (result != ISC_R_SUCCESS) |
| 1466 | goto cleanup; |
| 1467 | named_add_reserved_dispatch(named_g_server, |
| 1468 | cfg_obj_assockaddr(obj)); |
| 1469 | } |
| 1470 | |
| 1471 | obj = NULL; |
| 1472 | if (na.family == AF_INET) |
| 1473 | (void)cfg_map_get(cpeer, "notify-source" , &obj); |
| 1474 | else |
| 1475 | (void)cfg_map_get(cpeer, "notify-source-v6" , &obj); |
| 1476 | if (obj != NULL) { |
| 1477 | result = dns_peer_setnotifysource(peer, |
| 1478 | cfg_obj_assockaddr(obj)); |
| 1479 | if (result != ISC_R_SUCCESS) |
| 1480 | goto cleanup; |
| 1481 | result = dns_peer_setnotifydscp(peer, cfg_obj_getdscp(obj)); |
| 1482 | if (result != ISC_R_SUCCESS) |
| 1483 | goto cleanup; |
| 1484 | named_add_reserved_dispatch(named_g_server, |
| 1485 | cfg_obj_assockaddr(obj)); |
| 1486 | } |
| 1487 | |
| 1488 | obj = NULL; |
| 1489 | if (na.family == AF_INET) |
| 1490 | (void)cfg_map_get(cpeer, "query-source" , &obj); |
| 1491 | else |
| 1492 | (void)cfg_map_get(cpeer, "query-source-v6" , &obj); |
| 1493 | if (obj != NULL) { |
| 1494 | result = dns_peer_setquerysource(peer, |
| 1495 | cfg_obj_assockaddr(obj)); |
| 1496 | if (result != ISC_R_SUCCESS) |
| 1497 | goto cleanup; |
| 1498 | result = dns_peer_setquerydscp(peer, cfg_obj_getdscp(obj)); |
| 1499 | if (result != ISC_R_SUCCESS) |
| 1500 | goto cleanup; |
| 1501 | named_add_reserved_dispatch(named_g_server, |
| 1502 | cfg_obj_assockaddr(obj)); |
| 1503 | } |
| 1504 | |
| 1505 | *peerp = peer; |
| 1506 | return (ISC_R_SUCCESS); |
| 1507 | |
| 1508 | cleanup: |
| 1509 | dns_peer_detach(&peer); |
| 1510 | return (result); |
| 1511 | } |
| 1512 | |
| 1513 | #ifdef HAVE_DLOPEN |
| 1514 | static isc_result_t |
| 1515 | configure_dyndb(const cfg_obj_t *dyndb, isc_mem_t *mctx, |
| 1516 | const dns_dyndbctx_t *dctx) |
| 1517 | { |
| 1518 | isc_result_t result = ISC_R_SUCCESS; |
| 1519 | const cfg_obj_t *obj; |
| 1520 | const char *name, *library; |
| 1521 | |
| 1522 | /* Get the name of the dyndb instance and the library path . */ |
| 1523 | name = cfg_obj_asstring(cfg_tuple_get(dyndb, "name" )); |
| 1524 | library = cfg_obj_asstring(cfg_tuple_get(dyndb, "library" )); |
| 1525 | |
| 1526 | obj = cfg_tuple_get(dyndb, "parameters" ); |
| 1527 | if (obj != NULL) |
| 1528 | result = dns_dyndb_load(library, name, cfg_obj_asstring(obj), |
| 1529 | cfg_obj_file(obj), cfg_obj_line(obj), |
| 1530 | mctx, dctx); |
| 1531 | |
| 1532 | if (result != ISC_R_SUCCESS) |
| 1533 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 1534 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 1535 | "dynamic database '%s' configuration failed: %s" , |
| 1536 | name, isc_result_totext(result)); |
| 1537 | return (result); |
| 1538 | } |
| 1539 | #endif |
| 1540 | |
| 1541 | |
| 1542 | static isc_result_t |
| 1543 | disable_algorithms(const cfg_obj_t *disabled, dns_resolver_t *resolver) { |
| 1544 | isc_result_t result; |
| 1545 | const cfg_obj_t *algorithms; |
| 1546 | const cfg_listelt_t *element; |
| 1547 | const char *str; |
| 1548 | dns_fixedname_t fixed; |
| 1549 | dns_name_t *name; |
| 1550 | isc_buffer_t b; |
| 1551 | |
| 1552 | name = dns_fixedname_initname(&fixed); |
| 1553 | str = cfg_obj_asstring(cfg_tuple_get(disabled, "name" )); |
| 1554 | isc_buffer_constinit(&b, str, strlen(str)); |
| 1555 | isc_buffer_add(&b, strlen(str)); |
| 1556 | CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL)); |
| 1557 | |
| 1558 | algorithms = cfg_tuple_get(disabled, "algorithms" ); |
| 1559 | for (element = cfg_list_first(algorithms); |
| 1560 | element != NULL; |
| 1561 | element = cfg_list_next(element)) |
| 1562 | { |
| 1563 | isc_textregion_t r; |
| 1564 | dns_secalg_t alg; |
| 1565 | |
| 1566 | DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base); |
| 1567 | r.length = strlen(r.base); |
| 1568 | |
| 1569 | result = dns_secalg_fromtext(&alg, &r); |
| 1570 | if (result != ISC_R_SUCCESS) { |
| 1571 | uint8_t ui; |
| 1572 | result = isc_parse_uint8(&ui, r.base, 10); |
| 1573 | alg = ui; |
| 1574 | } |
| 1575 | if (result != ISC_R_SUCCESS) { |
| 1576 | cfg_obj_log(cfg_listelt_value(element), |
| 1577 | named_g_lctx, ISC_LOG_ERROR, |
| 1578 | "invalid algorithm" ); |
| 1579 | CHECK(result); |
| 1580 | } |
| 1581 | CHECK(dns_resolver_disable_algorithm(resolver, name, alg)); |
| 1582 | } |
| 1583 | cleanup: |
| 1584 | return (result); |
| 1585 | } |
| 1586 | |
| 1587 | static isc_result_t |
| 1588 | disable_ds_digests(const cfg_obj_t *disabled, dns_resolver_t *resolver) { |
| 1589 | isc_result_t result; |
| 1590 | const cfg_obj_t *digests; |
| 1591 | const cfg_listelt_t *element; |
| 1592 | const char *str; |
| 1593 | dns_fixedname_t fixed; |
| 1594 | dns_name_t *name; |
| 1595 | isc_buffer_t b; |
| 1596 | |
| 1597 | name = dns_fixedname_initname(&fixed); |
| 1598 | str = cfg_obj_asstring(cfg_tuple_get(disabled, "name" )); |
| 1599 | isc_buffer_constinit(&b, str, strlen(str)); |
| 1600 | isc_buffer_add(&b, strlen(str)); |
| 1601 | CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL)); |
| 1602 | |
| 1603 | digests = cfg_tuple_get(disabled, "digests" ); |
| 1604 | for (element = cfg_list_first(digests); |
| 1605 | element != NULL; |
| 1606 | element = cfg_list_next(element)) |
| 1607 | { |
| 1608 | isc_textregion_t r; |
| 1609 | dns_dsdigest_t digest; |
| 1610 | |
| 1611 | DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base); |
| 1612 | r.length = strlen(r.base); |
| 1613 | |
| 1614 | /* disable_ds_digests handles numeric values. */ |
| 1615 | result = dns_dsdigest_fromtext(&digest, &r); |
| 1616 | if (result != ISC_R_SUCCESS) { |
| 1617 | cfg_obj_log(cfg_listelt_value(element), |
| 1618 | named_g_lctx, ISC_LOG_ERROR, |
| 1619 | "invalid algorithm" ); |
| 1620 | CHECK(result); |
| 1621 | } |
| 1622 | CHECK(dns_resolver_disable_ds_digest(resolver, name, digest)); |
| 1623 | } |
| 1624 | cleanup: |
| 1625 | return (result); |
| 1626 | } |
| 1627 | |
| 1628 | static bool |
| 1629 | on_disable_list(const cfg_obj_t *disablelist, dns_name_t *zonename) { |
| 1630 | const cfg_listelt_t *element; |
| 1631 | dns_fixedname_t fixed; |
| 1632 | dns_name_t *name; |
| 1633 | isc_result_t result; |
| 1634 | const cfg_obj_t *value; |
| 1635 | const char *str; |
| 1636 | isc_buffer_t b; |
| 1637 | |
| 1638 | name = dns_fixedname_initname(&fixed); |
| 1639 | |
| 1640 | for (element = cfg_list_first(disablelist); |
| 1641 | element != NULL; |
| 1642 | element = cfg_list_next(element)) |
| 1643 | { |
| 1644 | value = cfg_listelt_value(element); |
| 1645 | str = cfg_obj_asstring(value); |
| 1646 | isc_buffer_constinit(&b, str, strlen(str)); |
| 1647 | isc_buffer_add(&b, strlen(str)); |
| 1648 | result = dns_name_fromtext(name, &b, dns_rootname, |
| 1649 | 0, NULL); |
| 1650 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 1651 | if (dns_name_equal(name, zonename)) |
| 1652 | return (true); |
| 1653 | } |
| 1654 | return (false); |
| 1655 | } |
| 1656 | |
| 1657 | static isc_result_t |
| 1658 | check_dbtype(dns_zone_t *zone, unsigned int dbtypec, const char **dbargv, |
| 1659 | isc_mem_t *mctx) |
| 1660 | { |
| 1661 | char **argv = NULL; |
| 1662 | unsigned int i; |
| 1663 | isc_result_t result = ISC_R_SUCCESS; |
| 1664 | |
| 1665 | CHECK(dns_zone_getdbtype(zone, &argv, mctx)); |
| 1666 | |
| 1667 | /* |
| 1668 | * Check that all the arguments match. |
| 1669 | */ |
| 1670 | for (i = 0; i < dbtypec; i++) |
| 1671 | if (argv[i] == NULL || strcmp(argv[i], dbargv[i]) != 0) |
| 1672 | CHECK(ISC_R_FAILURE); |
| 1673 | |
| 1674 | /* |
| 1675 | * Check that there are not extra arguments. |
| 1676 | */ |
| 1677 | if (i == dbtypec && argv[i] != NULL) |
| 1678 | result = ISC_R_FAILURE; |
| 1679 | |
| 1680 | cleanup: |
| 1681 | isc_mem_free(mctx, argv); |
| 1682 | return (result); |
| 1683 | } |
| 1684 | |
| 1685 | static isc_result_t |
| 1686 | setquerystats(dns_zone_t *zone, isc_mem_t *mctx, dns_zonestat_level_t level) { |
| 1687 | isc_result_t result; |
| 1688 | isc_stats_t *zoneqrystats; |
| 1689 | |
| 1690 | dns_zone_setstatlevel(zone, level); |
| 1691 | |
| 1692 | zoneqrystats = NULL; |
| 1693 | if (level == dns_zonestat_full) { |
| 1694 | result = isc_stats_create(mctx, &zoneqrystats, |
| 1695 | ns_statscounter_max); |
| 1696 | if (result != ISC_R_SUCCESS) |
| 1697 | return (result); |
| 1698 | } |
| 1699 | dns_zone_setrequeststats(zone, zoneqrystats); |
| 1700 | if (zoneqrystats != NULL) |
| 1701 | isc_stats_detach(&zoneqrystats); |
| 1702 | |
| 1703 | return (ISC_R_SUCCESS); |
| 1704 | } |
| 1705 | |
| 1706 | static named_cache_t * |
| 1707 | cachelist_find(named_cachelist_t *cachelist, const char *cachename, |
| 1708 | dns_rdataclass_t rdclass) |
| 1709 | { |
| 1710 | named_cache_t *nsc; |
| 1711 | |
| 1712 | for (nsc = ISC_LIST_HEAD(*cachelist); |
| 1713 | nsc != NULL; |
| 1714 | nsc = ISC_LIST_NEXT(nsc, link)) { |
| 1715 | if (nsc->rdclass == rdclass && |
| 1716 | strcmp(dns_cache_getname(nsc->cache), cachename) == 0) |
| 1717 | return (nsc); |
| 1718 | } |
| 1719 | |
| 1720 | return (NULL); |
| 1721 | } |
| 1722 | |
| 1723 | static bool |
| 1724 | cache_reusable(dns_view_t *originview, dns_view_t *view, |
| 1725 | bool new_zero_no_soattl) |
| 1726 | { |
| 1727 | if (originview->rdclass != view->rdclass || |
| 1728 | originview->checknames != view->checknames || |
| 1729 | dns_resolver_getzeronosoattl(originview->resolver) != |
| 1730 | new_zero_no_soattl || |
| 1731 | originview->acceptexpired != view->acceptexpired || |
| 1732 | originview->enablevalidation != view->enablevalidation || |
| 1733 | originview->maxcachettl != view->maxcachettl || |
| 1734 | originview->maxncachettl != view->maxncachettl) { |
| 1735 | return (false); |
| 1736 | } |
| 1737 | |
| 1738 | return (true); |
| 1739 | } |
| 1740 | |
| 1741 | static bool |
| 1742 | cache_sharable(dns_view_t *originview, dns_view_t *view, |
| 1743 | bool new_zero_no_soattl, |
| 1744 | unsigned int new_cleaning_interval, |
| 1745 | uint64_t new_max_cache_size, |
| 1746 | uint32_t new_stale_ttl) |
| 1747 | { |
| 1748 | /* |
| 1749 | * If the cache cannot even reused for the same view, it cannot be |
| 1750 | * shared with other views. |
| 1751 | */ |
| 1752 | if (!cache_reusable(originview, view, new_zero_no_soattl)) |
| 1753 | return (false); |
| 1754 | |
| 1755 | /* |
| 1756 | * Check other cache related parameters that must be consistent among |
| 1757 | * the sharing views. |
| 1758 | */ |
| 1759 | if (dns_cache_getcleaninginterval(originview->cache) != |
| 1760 | new_cleaning_interval || |
| 1761 | dns_cache_getservestalettl(originview->cache) != new_stale_ttl || |
| 1762 | dns_cache_getcachesize(originview->cache) != new_max_cache_size) { |
| 1763 | return (false); |
| 1764 | } |
| 1765 | |
| 1766 | return (true); |
| 1767 | } |
| 1768 | |
| 1769 | /* |
| 1770 | * Callback from DLZ configure when the driver sets up a writeable zone |
| 1771 | */ |
| 1772 | static isc_result_t |
| 1773 | dlzconfigure_callback(dns_view_t *view, dns_dlzdb_t *dlzdb, dns_zone_t *zone) { |
| 1774 | dns_name_t *origin = dns_zone_getorigin(zone); |
| 1775 | dns_rdataclass_t zclass = view->rdclass; |
| 1776 | isc_result_t result; |
| 1777 | |
| 1778 | result = dns_zonemgr_managezone(named_g_server->zonemgr, zone); |
| 1779 | if (result != ISC_R_SUCCESS) |
| 1780 | return (result); |
| 1781 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 1782 | |
| 1783 | return (named_zone_configure_writeable_dlz(dlzdb, zone, |
| 1784 | zclass, origin)); |
| 1785 | } |
| 1786 | |
| 1787 | static isc_result_t |
| 1788 | dns64_reverse(dns_view_t *view, isc_mem_t *mctx, isc_netaddr_t *na, |
| 1789 | unsigned int prefixlen, const char *server, |
| 1790 | const char *contact) |
| 1791 | { |
| 1792 | char reverse[48+sizeof("ip6.arpa." )] = { 0 }; |
| 1793 | char buf[sizeof("x.x." )]; |
| 1794 | const char *dns64_dbtype[4] = { "_dns64" , "dns64" , "." , "." }; |
| 1795 | const char *sep = ": view " ; |
| 1796 | const char *viewname = view->name; |
| 1797 | const unsigned char *s6; |
| 1798 | dns_fixedname_t fixed; |
| 1799 | dns_name_t *name; |
| 1800 | dns_zone_t *zone = NULL; |
| 1801 | int dns64_dbtypec = 4; |
| 1802 | isc_buffer_t b; |
| 1803 | isc_result_t result; |
| 1804 | |
| 1805 | REQUIRE(prefixlen == 32 || prefixlen == 40 || prefixlen == 48 || |
| 1806 | prefixlen == 56 || prefixlen == 64 || prefixlen == 96); |
| 1807 | |
| 1808 | if (!strcmp(viewname, "_default" )) { |
| 1809 | sep = "" ; |
| 1810 | viewname = "" ; |
| 1811 | } |
| 1812 | |
| 1813 | /* |
| 1814 | * Construct the reverse name of the zone. |
| 1815 | */ |
| 1816 | s6 = na->type.in6.s6_addr; |
| 1817 | while (prefixlen > 0) { |
| 1818 | prefixlen -= 8; |
| 1819 | snprintf(buf, sizeof(buf), "%x.%x." , s6[prefixlen/8] & 0xf, |
| 1820 | (s6[prefixlen/8] >> 4) & 0xf); |
| 1821 | strlcat(reverse, buf, sizeof(reverse)); |
| 1822 | } |
| 1823 | strlcat(reverse, "ip6.arpa." , sizeof(reverse)); |
| 1824 | |
| 1825 | /* |
| 1826 | * Create the actual zone. |
| 1827 | */ |
| 1828 | if (server != NULL) |
| 1829 | dns64_dbtype[2] = server; |
| 1830 | if (contact != NULL) |
| 1831 | dns64_dbtype[3] = contact; |
| 1832 | name = dns_fixedname_initname(&fixed); |
| 1833 | isc_buffer_constinit(&b, reverse, strlen(reverse)); |
| 1834 | isc_buffer_add(&b, strlen(reverse)); |
| 1835 | CHECK(dns_name_fromtext(name, &b, dns_rootname, 0, NULL)); |
| 1836 | CHECK(dns_zone_create(&zone, mctx)); |
| 1837 | CHECK(dns_zone_setorigin(zone, name)); |
| 1838 | dns_zone_setview(zone, view); |
| 1839 | CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone)); |
| 1840 | dns_zone_setclass(zone, view->rdclass); |
| 1841 | dns_zone_settype(zone, dns_zone_master); |
| 1842 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 1843 | CHECK(dns_zone_setdbtype(zone, dns64_dbtypec, dns64_dbtype)); |
| 1844 | if (view->queryacl != NULL) |
| 1845 | dns_zone_setqueryacl(zone, view->queryacl); |
| 1846 | if (view->queryonacl != NULL) |
| 1847 | dns_zone_setqueryonacl(zone, view->queryonacl); |
| 1848 | dns_zone_setdialup(zone, dns_dialuptype_no); |
| 1849 | dns_zone_setnotifytype(zone, dns_notifytype_no); |
| 1850 | dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true); |
| 1851 | CHECK(setquerystats(zone, mctx, dns_zonestat_none)); /* XXXMPA */ |
| 1852 | CHECK(dns_view_addzone(view, zone)); |
| 1853 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 1854 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 1855 | "dns64 reverse zone%s%s: %s" , sep, |
| 1856 | viewname, reverse); |
| 1857 | |
| 1858 | cleanup: |
| 1859 | if (zone != NULL) |
| 1860 | dns_zone_detach(&zone); |
| 1861 | return (result); |
| 1862 | } |
| 1863 | |
| 1864 | #ifdef USE_DNSRPS |
| 1865 | typedef struct conf_dnsrps_ctx conf_dnsrps_ctx_t; |
| 1866 | struct conf_dnsrps_ctx { |
| 1867 | isc_result_t result; |
| 1868 | char *cstr; |
| 1869 | size_t cstr_size; |
| 1870 | isc_mem_t *mctx; |
| 1871 | }; |
| 1872 | |
| 1873 | /* |
| 1874 | * Add to the DNSRPS configuration string. |
| 1875 | */ |
| 1876 | static bool |
| 1877 | conf_dnsrps_sadd(conf_dnsrps_ctx_t *ctx, const char *p, ...) { |
| 1878 | size_t new_len, cur_len, new_cstr_size; |
| 1879 | char *new_cstr; |
| 1880 | va_list args; |
| 1881 | |
| 1882 | if (ctx->cstr == NULL) { |
| 1883 | ctx->cstr = isc_mem_get(ctx->mctx, 256); |
| 1884 | if (ctx->cstr == NULL) { |
| 1885 | ctx->result = ISC_R_NOMEMORY; |
| 1886 | return (false); |
| 1887 | } |
| 1888 | ctx->cstr[0] = '\0'; |
| 1889 | ctx->cstr_size = 256; |
| 1890 | } |
| 1891 | |
| 1892 | cur_len = strlen(ctx->cstr); |
| 1893 | va_start(args, p); |
| 1894 | new_len = vsnprintf(ctx->cstr + cur_len, ctx->cstr_size - cur_len, |
| 1895 | p, args) + 1; |
| 1896 | va_end(args); |
| 1897 | |
| 1898 | if (cur_len + new_len <= ctx->cstr_size) |
| 1899 | return (true); |
| 1900 | |
| 1901 | new_cstr_size = ((cur_len + new_len)/256 + 1) * 256; |
| 1902 | new_cstr = isc_mem_get(ctx->mctx, new_cstr_size); |
| 1903 | if (new_cstr == NULL) { |
| 1904 | ctx->result = ISC_R_NOMEMORY; |
| 1905 | return (false); |
| 1906 | } |
| 1907 | |
| 1908 | memmove(new_cstr, ctx->cstr, cur_len); |
| 1909 | isc_mem_put(ctx->mctx, ctx->cstr, ctx->cstr_size); |
| 1910 | ctx->cstr_size = new_cstr_size; |
| 1911 | ctx->cstr = new_cstr; |
| 1912 | |
| 1913 | /* cannot use args twice after a single va_start()on some systems */ |
| 1914 | va_start(args, p); |
| 1915 | vsnprintf(ctx->cstr + cur_len, ctx->cstr_size - cur_len, p, args); |
| 1916 | va_end(args); |
| 1917 | return (true); |
| 1918 | } |
| 1919 | |
| 1920 | /* |
| 1921 | * Get an DNSRPS configuration value using the global and view options |
| 1922 | * for the default. Return false upon failure. |
| 1923 | */ |
| 1924 | static bool |
| 1925 | conf_dnsrps_get(const cfg_obj_t **sub_obj, |
| 1926 | const cfg_obj_t **maps ,const cfg_obj_t *obj, |
| 1927 | const char *name, conf_dnsrps_ctx_t *ctx) |
| 1928 | { |
| 1929 | if (ctx != NULL && ctx->result != ISC_R_SUCCESS) { |
| 1930 | *sub_obj = NULL; |
| 1931 | return (false); |
| 1932 | } |
| 1933 | |
| 1934 | *sub_obj = cfg_tuple_get(obj, name); |
| 1935 | if (cfg_obj_isvoid(*sub_obj)) { |
| 1936 | *sub_obj = NULL; |
| 1937 | if (maps != NULL && |
| 1938 | ISC_R_SUCCESS != named_config_get(maps, name, sub_obj)) |
| 1939 | *sub_obj = NULL; |
| 1940 | } |
| 1941 | return (true); |
| 1942 | } |
| 1943 | |
| 1944 | /* |
| 1945 | * Handle a DNSRPS boolean configuration value with the global and view |
| 1946 | * options providing the default. |
| 1947 | */ |
| 1948 | static void |
| 1949 | conf_dnsrps_yes_no(const cfg_obj_t *obj, const char* name, |
| 1950 | conf_dnsrps_ctx_t *ctx) |
| 1951 | { |
| 1952 | const cfg_obj_t *sub_obj; |
| 1953 | |
| 1954 | if (!conf_dnsrps_get(&sub_obj, NULL, obj, name, ctx)) |
| 1955 | return; |
| 1956 | if (sub_obj == NULL) |
| 1957 | return; |
| 1958 | if (ctx == NULL) { |
| 1959 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, |
| 1960 | "\"%s\" without \"dnsrps-enable yes\"" , |
| 1961 | name); |
| 1962 | return; |
| 1963 | } |
| 1964 | |
| 1965 | conf_dnsrps_sadd(ctx, " %s %s" , name, |
| 1966 | cfg_obj_asboolean(sub_obj) ? "yes" : "no" ); |
| 1967 | } |
| 1968 | |
| 1969 | static void |
| 1970 | conf_dnsrps_num(const cfg_obj_t *obj, const char *name, |
| 1971 | conf_dnsrps_ctx_t *ctx) |
| 1972 | { |
| 1973 | const cfg_obj_t *sub_obj; |
| 1974 | |
| 1975 | if (!conf_dnsrps_get(&sub_obj, NULL, obj, name, ctx)) |
| 1976 | return; |
| 1977 | if (sub_obj == NULL) |
| 1978 | return; |
| 1979 | if (ctx == NULL) { |
| 1980 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, |
| 1981 | "\"%s\" without \"dnsrps-enable yes\"" , |
| 1982 | name); |
| 1983 | return; |
| 1984 | } |
| 1985 | |
| 1986 | conf_dnsrps_sadd(ctx, " %s %d" , name, cfg_obj_asuint32(sub_obj)); |
| 1987 | } |
| 1988 | |
| 1989 | /* |
| 1990 | * Convert the parsed RPZ configuration statement to a string for |
| 1991 | * dns_rpz_new_zones(). |
| 1992 | */ |
| 1993 | static isc_result_t |
| 1994 | conf_dnsrps(dns_view_t *view, const cfg_obj_t **maps, |
| 1995 | bool nsip_enabled, bool nsdname_enabled, |
| 1996 | dns_rpz_zbits_t *nsip_on, dns_rpz_zbits_t *nsdname_on, |
| 1997 | char **rps_cstr, size_t *rps_cstr_size, |
| 1998 | const cfg_obj_t *rpz_obj, const cfg_listelt_t *zone_element) |
| 1999 | { |
| 2000 | conf_dnsrps_ctx_t ctx; |
| 2001 | const cfg_obj_t *zone_obj, *obj; |
| 2002 | dns_rpz_num_t rpz_num; |
| 2003 | bool on; |
| 2004 | const char *s; |
| 2005 | |
| 2006 | memset(&ctx, 0, sizeof(ctx)); |
| 2007 | ctx.result = ISC_R_SUCCESS; |
| 2008 | ctx.mctx = view->mctx; |
| 2009 | |
| 2010 | for (rpz_num = 0; |
| 2011 | zone_element != NULL && ctx.result == ISC_R_SUCCESS; |
| 2012 | ++rpz_num) { |
| 2013 | zone_obj = cfg_listelt_value(zone_element); |
| 2014 | |
| 2015 | s = cfg_obj_asstring(cfg_tuple_get(zone_obj, "zone name" )); |
| 2016 | conf_dnsrps_sadd(&ctx, "zone \"%s\"" , s); |
| 2017 | |
| 2018 | obj = cfg_tuple_get(zone_obj, "policy" ); |
| 2019 | if (!cfg_obj_isvoid(obj)) { |
| 2020 | s = cfg_obj_asstring(cfg_tuple_get(obj, "policy name" )); |
| 2021 | conf_dnsrps_sadd(&ctx, " policy %s" , s); |
| 2022 | if (strcasecmp(s, "cname" ) == 0) { |
| 2023 | s = cfg_obj_asstring(cfg_tuple_get(obj, |
| 2024 | "cname" )); |
| 2025 | conf_dnsrps_sadd(&ctx, " %s" , s); |
| 2026 | } |
| 2027 | } |
| 2028 | |
| 2029 | conf_dnsrps_yes_no(zone_obj, "recursive-only" , &ctx); |
| 2030 | conf_dnsrps_yes_no(zone_obj, "log" , &ctx); |
| 2031 | conf_dnsrps_num(zone_obj, "max-policy-ttl" , &ctx); |
| 2032 | obj = cfg_tuple_get(rpz_obj, "nsip-enable" ); |
| 2033 | if (!cfg_obj_isvoid(obj)) { |
| 2034 | if (cfg_obj_asboolean(obj)) |
| 2035 | *nsip_on |= DNS_RPZ_ZBIT(rpz_num); |
| 2036 | else |
| 2037 | *nsip_on &= ~DNS_RPZ_ZBIT(rpz_num); |
| 2038 | } |
| 2039 | on = ((*nsip_on & DNS_RPZ_ZBIT(rpz_num)) != 0); |
| 2040 | if (nsip_enabled != on) |
| 2041 | conf_dnsrps_sadd(&ctx, on ? " nsip-enable yes " : |
| 2042 | " nsip-enable no " ); |
| 2043 | obj = cfg_tuple_get(rpz_obj, "nsdname-enable" ); |
| 2044 | if (!cfg_obj_isvoid(obj)) { |
| 2045 | if (cfg_obj_asboolean(obj)) |
| 2046 | *nsdname_on |= DNS_RPZ_ZBIT(rpz_num); |
| 2047 | else |
| 2048 | *nsdname_on &= ~DNS_RPZ_ZBIT(rpz_num); |
| 2049 | } |
| 2050 | on = ((*nsdname_on & DNS_RPZ_ZBIT(rpz_num)) != 0); |
| 2051 | if (nsdname_enabled != on) |
| 2052 | conf_dnsrps_sadd(&ctx, on |
| 2053 | ? " nsdname-enable yes " |
| 2054 | : " nsdname-enable no " ); |
| 2055 | conf_dnsrps_sadd(&ctx, ";\n" ); |
| 2056 | zone_element = cfg_list_next(zone_element); |
| 2057 | } |
| 2058 | |
| 2059 | conf_dnsrps_yes_no(rpz_obj, "recursive-only" , &ctx); |
| 2060 | conf_dnsrps_num(rpz_obj, "max-policy-ttl" , &ctx); |
| 2061 | conf_dnsrps_num(rpz_obj, "min-ns-dots" , &ctx); |
| 2062 | conf_dnsrps_yes_no(rpz_obj, "qname-wait-recurse" , &ctx); |
| 2063 | conf_dnsrps_yes_no(rpz_obj, "break-dnssec" , &ctx); |
| 2064 | if (!nsip_enabled) |
| 2065 | conf_dnsrps_sadd(&ctx, " nsip-enable no " ); |
| 2066 | if (!nsdname_enabled) |
| 2067 | conf_dnsrps_sadd(&ctx, " nsdname-enable no " ); |
| 2068 | |
| 2069 | /* |
| 2070 | * Get the general dnsrpzd parameters from the response-policy |
| 2071 | * statement in the view and the general options. |
| 2072 | */ |
| 2073 | if (conf_dnsrps_get(&obj, maps, rpz_obj, "dnsrps-options" , &ctx) && |
| 2074 | obj != NULL) |
| 2075 | conf_dnsrps_sadd(&ctx, " %s\n" , cfg_obj_asstring(obj)); |
| 2076 | |
| 2077 | if (ctx.result == ISC_R_SUCCESS) { |
| 2078 | *rps_cstr = ctx.cstr; |
| 2079 | *rps_cstr_size = ctx.cstr_size; |
| 2080 | } else { |
| 2081 | if (ctx.cstr != NULL) |
| 2082 | isc_mem_put(ctx.mctx, ctx.cstr, ctx.cstr_size); |
| 2083 | *rps_cstr = NULL; |
| 2084 | *rps_cstr_size = 0; |
| 2085 | } |
| 2086 | return (ctx.result); |
| 2087 | } |
| 2088 | #endif |
| 2089 | |
| 2090 | static isc_result_t |
| 2091 | configure_rpz_name(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name, |
| 2092 | const char *str, const char *msg) |
| 2093 | { |
| 2094 | isc_result_t result; |
| 2095 | |
| 2096 | result = dns_name_fromstring(name, str, DNS_NAME_DOWNCASE, view->mctx); |
| 2097 | if (result != ISC_R_SUCCESS) |
| 2098 | cfg_obj_log(obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2099 | "invalid %s '%s'" , msg, str); |
| 2100 | return (result); |
| 2101 | } |
| 2102 | |
| 2103 | static isc_result_t |
| 2104 | configure_rpz_name2(dns_view_t *view, const cfg_obj_t *obj, dns_name_t *name, |
| 2105 | const char *str, const dns_name_t *origin) |
| 2106 | { |
| 2107 | isc_result_t result; |
| 2108 | |
| 2109 | result = dns_name_fromstring2(name, str, origin, DNS_NAME_DOWNCASE, |
| 2110 | view->mctx); |
| 2111 | if (result != ISC_R_SUCCESS) |
| 2112 | cfg_obj_log(obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2113 | "invalid zone '%s'" , str); |
| 2114 | return (result); |
| 2115 | } |
| 2116 | |
| 2117 | static isc_result_t |
| 2118 | configure_rpz_zone(dns_view_t *view, const cfg_listelt_t *element, |
| 2119 | bool recursive_only_default, |
| 2120 | bool add_soa_default, |
| 2121 | dns_ttl_t ttl_default, |
| 2122 | uint32_t minupdateinterval_default, |
| 2123 | const dns_rpz_zone_t *old, |
| 2124 | bool *old_rpz_okp) |
| 2125 | { |
| 2126 | const cfg_obj_t *rpz_obj, *obj; |
| 2127 | const char *str; |
| 2128 | dns_rpz_zone_t *zone = NULL; |
| 2129 | isc_result_t result; |
| 2130 | dns_rpz_num_t rpz_num; |
| 2131 | |
| 2132 | REQUIRE(old != NULL || !*old_rpz_okp); |
| 2133 | |
| 2134 | rpz_obj = cfg_listelt_value(element); |
| 2135 | |
| 2136 | if (view->rpzs->p.num_zones >= DNS_RPZ_MAX_ZONES) { |
| 2137 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2138 | "limit of %d response policy zones exceeded" , |
| 2139 | DNS_RPZ_MAX_ZONES); |
| 2140 | return (ISC_R_FAILURE); |
| 2141 | } |
| 2142 | |
| 2143 | result = dns_rpz_new_zone(view->rpzs, &zone); |
| 2144 | if (result != ISC_R_SUCCESS) { |
| 2145 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2146 | "Error creating new RPZ zone : %s" , |
| 2147 | isc_result_totext(result)); |
| 2148 | return (result); |
| 2149 | } |
| 2150 | |
| 2151 | obj = cfg_tuple_get(rpz_obj, "recursive-only" ); |
| 2152 | if (cfg_obj_isvoid(obj) ? |
| 2153 | recursive_only_default : cfg_obj_asboolean(obj)) |
| 2154 | { |
| 2155 | view->rpzs->p.no_rd_ok &= ~DNS_RPZ_ZBIT(zone->num); |
| 2156 | } else { |
| 2157 | view->rpzs->p.no_rd_ok |= DNS_RPZ_ZBIT(zone->num); |
| 2158 | } |
| 2159 | |
| 2160 | obj = cfg_tuple_get(rpz_obj, "log" ); |
| 2161 | if (!cfg_obj_isvoid(obj) && !cfg_obj_asboolean(obj)) { |
| 2162 | view->rpzs->p.no_log |= DNS_RPZ_ZBIT(zone->num); |
| 2163 | } else { |
| 2164 | view->rpzs->p.no_log &= ~DNS_RPZ_ZBIT(zone->num); |
| 2165 | } |
| 2166 | |
| 2167 | obj = cfg_tuple_get(rpz_obj, "max-policy-ttl" ); |
| 2168 | if (cfg_obj_isuint32(obj)) { |
| 2169 | zone->max_policy_ttl = cfg_obj_asuint32(obj); |
| 2170 | } else { |
| 2171 | zone->max_policy_ttl = ttl_default; |
| 2172 | } |
| 2173 | |
| 2174 | obj = cfg_tuple_get(rpz_obj, "min-update-interval" ); |
| 2175 | if (cfg_obj_isuint32(obj)) { |
| 2176 | zone->min_update_interval = cfg_obj_asuint32(obj); |
| 2177 | } else { |
| 2178 | zone->min_update_interval = minupdateinterval_default; |
| 2179 | } |
| 2180 | |
| 2181 | if (*old_rpz_okp && zone->max_policy_ttl != old->max_policy_ttl) |
| 2182 | *old_rpz_okp = false; |
| 2183 | |
| 2184 | str = cfg_obj_asstring(cfg_tuple_get(rpz_obj, "zone name" )); |
| 2185 | result = configure_rpz_name(view, rpz_obj, &zone->origin, str, "zone" ); |
| 2186 | if (result != ISC_R_SUCCESS) |
| 2187 | return (result); |
| 2188 | if (dns_name_equal(&zone->origin, dns_rootname)) { |
| 2189 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2190 | "invalid zone name '%s'" , str); |
| 2191 | return (DNS_R_EMPTYLABEL); |
| 2192 | } |
| 2193 | if (!view->rpzs->p.dnsrps_enabled) { |
| 2194 | for (rpz_num = 0; |
| 2195 | rpz_num < view->rpzs->p.num_zones - 1; |
| 2196 | ++rpz_num) |
| 2197 | { |
| 2198 | if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin, |
| 2199 | &zone->origin)) { |
| 2200 | cfg_obj_log(rpz_obj, named_g_lctx, |
| 2201 | DNS_RPZ_ERROR_LEVEL, |
| 2202 | "duplicate '%s'" , str); |
| 2203 | result = DNS_R_DUPLICATE; |
| 2204 | return (result); |
| 2205 | } |
| 2206 | } |
| 2207 | } |
| 2208 | if (*old_rpz_okp && !dns_name_equal(&old->origin, &zone->origin)) |
| 2209 | *old_rpz_okp = false; |
| 2210 | |
| 2211 | result = configure_rpz_name2(view, rpz_obj, &zone->client_ip, |
| 2212 | DNS_RPZ_CLIENT_IP_ZONE, &zone->origin); |
| 2213 | if (result != ISC_R_SUCCESS) |
| 2214 | return (result); |
| 2215 | |
| 2216 | result = configure_rpz_name2(view, rpz_obj, &zone->ip, |
| 2217 | DNS_RPZ_IP_ZONE, &zone->origin); |
| 2218 | if (result != ISC_R_SUCCESS) |
| 2219 | return (result); |
| 2220 | |
| 2221 | result = configure_rpz_name2(view, rpz_obj, &zone->nsdname, |
| 2222 | DNS_RPZ_NSDNAME_ZONE, &zone->origin); |
| 2223 | if (result != ISC_R_SUCCESS) |
| 2224 | return (result); |
| 2225 | |
| 2226 | result = configure_rpz_name2(view, rpz_obj, &zone->nsip, |
| 2227 | DNS_RPZ_NSIP_ZONE, &zone->origin); |
| 2228 | if (result != ISC_R_SUCCESS) |
| 2229 | return (result); |
| 2230 | |
| 2231 | result = configure_rpz_name(view, rpz_obj, &zone->passthru, |
| 2232 | DNS_RPZ_PASSTHRU_NAME, "name" ); |
| 2233 | if (result != ISC_R_SUCCESS) |
| 2234 | return (result); |
| 2235 | |
| 2236 | result = configure_rpz_name(view, rpz_obj, &zone->drop, |
| 2237 | DNS_RPZ_DROP_NAME, "name" ); |
| 2238 | if (result != ISC_R_SUCCESS) |
| 2239 | return (result); |
| 2240 | |
| 2241 | result = configure_rpz_name(view, rpz_obj, &zone->tcp_only, |
| 2242 | DNS_RPZ_TCP_ONLY_NAME, "name" ); |
| 2243 | if (result != ISC_R_SUCCESS) |
| 2244 | return (result); |
| 2245 | |
| 2246 | obj = cfg_tuple_get(rpz_obj, "policy" ); |
| 2247 | if (cfg_obj_isvoid(obj)) { |
| 2248 | zone->policy = DNS_RPZ_POLICY_GIVEN; |
| 2249 | } else { |
| 2250 | str = cfg_obj_asstring(cfg_tuple_get(obj, "policy name" )); |
| 2251 | zone->policy = dns_rpz_str2policy(str); |
| 2252 | INSIST(zone->policy != DNS_RPZ_POLICY_ERROR); |
| 2253 | if (zone->policy == DNS_RPZ_POLICY_CNAME) { |
| 2254 | str = cfg_obj_asstring(cfg_tuple_get(obj, "cname" )); |
| 2255 | result = configure_rpz_name(view, rpz_obj, &zone->cname, |
| 2256 | str, "cname" ); |
| 2257 | if (result != ISC_R_SUCCESS) |
| 2258 | return (result); |
| 2259 | } |
| 2260 | } |
| 2261 | if (*old_rpz_okp && (zone->policy != old->policy || |
| 2262 | !dns_name_equal(&old->cname, &zone->cname))) |
| 2263 | *old_rpz_okp = false; |
| 2264 | |
| 2265 | obj = cfg_tuple_get(rpz_obj, "add-soa" ); |
| 2266 | if (cfg_obj_isvoid(obj)) { |
| 2267 | zone->addsoa = add_soa_default; |
| 2268 | } else { |
| 2269 | zone->addsoa = cfg_obj_asboolean(obj); |
| 2270 | } |
| 2271 | |
| 2272 | return (ISC_R_SUCCESS); |
| 2273 | } |
| 2274 | |
| 2275 | static isc_result_t |
| 2276 | configure_rpz(dns_view_t *view, const cfg_obj_t **maps, |
| 2277 | const cfg_obj_t *rpz_obj, bool *old_rpz_okp) |
| 2278 | { |
| 2279 | bool dnsrps_enabled; |
| 2280 | const cfg_listelt_t *zone_element; |
| 2281 | char *rps_cstr; |
| 2282 | size_t rps_cstr_size; |
| 2283 | const cfg_obj_t *sub_obj; |
| 2284 | bool recursive_only_default, add_soa_default; |
| 2285 | bool nsip_enabled, nsdname_enabled; |
| 2286 | dns_rpz_zbits_t nsip_on, nsdname_on; |
| 2287 | dns_ttl_t ttl_default; |
| 2288 | uint32_t minupdateinterval_default; |
| 2289 | dns_rpz_zones_t *zones; |
| 2290 | const dns_rpz_zones_t *old; |
| 2291 | dns_view_t *pview; |
| 2292 | const dns_rpz_zone_t *old_zone; |
| 2293 | isc_result_t result; |
| 2294 | int i; |
| 2295 | |
| 2296 | *old_rpz_okp = false; |
| 2297 | |
| 2298 | zone_element = cfg_list_first(cfg_tuple_get(rpz_obj, "zone list" )); |
| 2299 | if (zone_element == NULL) |
| 2300 | return (ISC_R_SUCCESS); |
| 2301 | |
| 2302 | nsip_enabled = true; |
| 2303 | sub_obj = cfg_tuple_get(rpz_obj, "nsip-enable" ); |
| 2304 | if (!cfg_obj_isvoid(sub_obj)) { |
| 2305 | nsip_enabled = cfg_obj_asboolean(sub_obj); |
| 2306 | } |
| 2307 | nsip_on = nsip_enabled ? DNS_RPZ_ALL_ZBITS : 0; |
| 2308 | |
| 2309 | nsdname_enabled = true; |
| 2310 | sub_obj = cfg_tuple_get(rpz_obj, "nsdname-enable" ); |
| 2311 | if (!cfg_obj_isvoid(sub_obj)) { |
| 2312 | nsdname_enabled = cfg_obj_asboolean(sub_obj); |
| 2313 | } |
| 2314 | nsdname_on = nsdname_enabled ? DNS_RPZ_ALL_ZBITS : 0; |
| 2315 | |
| 2316 | /* |
| 2317 | * "dnsrps-enable yes|no" can be either a global or response-policy |
| 2318 | * clause. |
| 2319 | */ |
| 2320 | dnsrps_enabled = false; |
| 2321 | rps_cstr = NULL; |
| 2322 | rps_cstr_size = 0; |
| 2323 | sub_obj = NULL; |
| 2324 | (void)named_config_get(maps, "dnsrps-enable" , &sub_obj); |
| 2325 | if (sub_obj != NULL) { |
| 2326 | dnsrps_enabled = cfg_obj_asboolean(sub_obj); |
| 2327 | } |
| 2328 | sub_obj = cfg_tuple_get(rpz_obj, "dnsrps-enable" ); |
| 2329 | if (!cfg_obj_isvoid(sub_obj)) { |
| 2330 | dnsrps_enabled = cfg_obj_asboolean(sub_obj); |
| 2331 | } |
| 2332 | #ifndef USE_DNSRPS |
| 2333 | if (dnsrps_enabled) { |
| 2334 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2335 | "\"dnsrps-enable yes\" but" |
| 2336 | " without `./configure --enable-dnsrps`" ); |
| 2337 | return (ISC_R_FAILURE); |
| 2338 | } |
| 2339 | #else |
| 2340 | if (dnsrps_enabled) { |
| 2341 | if (librpz == NULL) { |
| 2342 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_ERROR_LEVEL, |
| 2343 | "\"dnsrps-enable yes\" but %s" , |
| 2344 | librpz_lib_open_emsg.c); |
| 2345 | return (ISC_R_FAILURE); |
| 2346 | } |
| 2347 | |
| 2348 | /* |
| 2349 | * Generate the DNS Response Policy Service |
| 2350 | * configuration string. |
| 2351 | */ |
| 2352 | result = conf_dnsrps(view, maps, |
| 2353 | nsip_enabled, nsdname_enabled, |
| 2354 | &nsip_on, &nsdname_on, |
| 2355 | &rps_cstr, &rps_cstr_size, |
| 2356 | rpz_obj, zone_element); |
| 2357 | if (result != ISC_R_SUCCESS) |
| 2358 | return (result); |
| 2359 | } |
| 2360 | #endif |
| 2361 | |
| 2362 | result = dns_rpz_new_zones(&view->rpzs, rps_cstr, |
| 2363 | rps_cstr_size, view->mctx, |
| 2364 | named_g_taskmgr, named_g_timermgr); |
| 2365 | if (result != ISC_R_SUCCESS) |
| 2366 | return (result); |
| 2367 | |
| 2368 | zones = view->rpzs; |
| 2369 | |
| 2370 | zones->p.nsip_on = nsip_on; |
| 2371 | zones->p.nsdname_on = nsdname_on; |
| 2372 | |
| 2373 | sub_obj = cfg_tuple_get(rpz_obj, "recursive-only" ); |
| 2374 | if (!cfg_obj_isvoid(sub_obj) && !cfg_obj_asboolean(sub_obj)) { |
| 2375 | recursive_only_default = false; |
| 2376 | } else { |
| 2377 | recursive_only_default = true; |
| 2378 | } |
| 2379 | |
| 2380 | sub_obj = cfg_tuple_get(rpz_obj, "add-soa" ); |
| 2381 | if (!cfg_obj_isvoid(sub_obj) && !cfg_obj_asboolean(sub_obj)) { |
| 2382 | add_soa_default = false; |
| 2383 | } else { |
| 2384 | add_soa_default = true; |
| 2385 | } |
| 2386 | |
| 2387 | sub_obj = cfg_tuple_get(rpz_obj, "break-dnssec" ); |
| 2388 | if (!cfg_obj_isvoid(sub_obj) && cfg_obj_asboolean(sub_obj)) { |
| 2389 | zones->p.break_dnssec = true; |
| 2390 | } else { |
| 2391 | zones->p.break_dnssec = false; |
| 2392 | } |
| 2393 | |
| 2394 | sub_obj = cfg_tuple_get(rpz_obj, "max-policy-ttl" ); |
| 2395 | if (cfg_obj_isuint32(sub_obj)) |
| 2396 | ttl_default = cfg_obj_asuint32(sub_obj); |
| 2397 | else |
| 2398 | ttl_default = DNS_RPZ_MAX_TTL_DEFAULT; |
| 2399 | |
| 2400 | sub_obj = cfg_tuple_get(rpz_obj, "min-update-interval" ); |
| 2401 | if (cfg_obj_isuint32(sub_obj)) |
| 2402 | minupdateinterval_default = cfg_obj_asuint32(sub_obj); |
| 2403 | else |
| 2404 | minupdateinterval_default = DNS_RPZ_MINUPDATEINTERVAL_DEFAULT; |
| 2405 | |
| 2406 | sub_obj = cfg_tuple_get(rpz_obj, "min-ns-dots" ); |
| 2407 | if (cfg_obj_isuint32(sub_obj)) |
| 2408 | zones->p.min_ns_labels = cfg_obj_asuint32(sub_obj) + 1; |
| 2409 | else |
| 2410 | zones->p.min_ns_labels = 2; |
| 2411 | |
| 2412 | sub_obj = cfg_tuple_get(rpz_obj, "qname-wait-recurse" ); |
| 2413 | if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj)) |
| 2414 | zones->p.qname_wait_recurse = true; |
| 2415 | else |
| 2416 | zones->p.qname_wait_recurse = false; |
| 2417 | |
| 2418 | sub_obj = cfg_tuple_get(rpz_obj, "nsip-wait-recurse" ); |
| 2419 | if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj)) |
| 2420 | zones->p.nsip_wait_recurse = true; |
| 2421 | else |
| 2422 | zones->p.nsip_wait_recurse = false; |
| 2423 | |
| 2424 | pview = NULL; |
| 2425 | result = dns_viewlist_find(&named_g_server->viewlist, |
| 2426 | view->name, view->rdclass, &pview); |
| 2427 | if (result == ISC_R_SUCCESS) { |
| 2428 | old = pview->rpzs; |
| 2429 | } else { |
| 2430 | old = NULL; |
| 2431 | } |
| 2432 | if (old == NULL) |
| 2433 | *old_rpz_okp = false; |
| 2434 | else |
| 2435 | *old_rpz_okp = true; |
| 2436 | |
| 2437 | for (i = 0; |
| 2438 | zone_element != NULL; |
| 2439 | ++i, zone_element = cfg_list_next(zone_element)) { |
| 2440 | INSIST(old != NULL || !*old_rpz_okp); |
| 2441 | if (*old_rpz_okp && i < old->p.num_zones) { |
| 2442 | old_zone = old->zones[i]; |
| 2443 | } else { |
| 2444 | *old_rpz_okp = false; |
| 2445 | old_zone = NULL; |
| 2446 | } |
| 2447 | result = configure_rpz_zone(view, zone_element, |
| 2448 | recursive_only_default, |
| 2449 | add_soa_default, |
| 2450 | ttl_default, |
| 2451 | minupdateinterval_default, |
| 2452 | old_zone, old_rpz_okp); |
| 2453 | if (result != ISC_R_SUCCESS) { |
| 2454 | if (pview != NULL) |
| 2455 | dns_view_detach(&pview); |
| 2456 | return (result); |
| 2457 | } |
| 2458 | } |
| 2459 | |
| 2460 | /* |
| 2461 | * If this is a reloading and the parameters and list of policy |
| 2462 | * zones are unchanged, then use the same policy data. |
| 2463 | * Data for individual zones that must be reloaded will be merged. |
| 2464 | */ |
| 2465 | if (*old_rpz_okp && |
| 2466 | old != NULL && memcmp(&old->p, &zones->p, sizeof(zones->p)) != 0) |
| 2467 | { |
| 2468 | *old_rpz_okp = false; |
| 2469 | } |
| 2470 | |
| 2471 | if (*old_rpz_okp && |
| 2472 | (old == NULL || |
| 2473 | old->rps_cstr == NULL) != (zones->rps_cstr == NULL)) |
| 2474 | { |
| 2475 | *old_rpz_okp = false; |
| 2476 | } |
| 2477 | |
| 2478 | if (*old_rpz_okp && |
| 2479 | (zones->rps_cstr != NULL && |
| 2480 | strcmp(old->rps_cstr, zones->rps_cstr) != 0)) |
| 2481 | { |
| 2482 | *old_rpz_okp = false; |
| 2483 | } |
| 2484 | |
| 2485 | if (*old_rpz_okp) { |
| 2486 | dns_rpz_detach_rpzs(&view->rpzs); |
| 2487 | dns_rpz_attach_rpzs(pview->rpzs, &view->rpzs); |
| 2488 | } else if (old != NULL && pview != NULL) { |
| 2489 | ++pview->rpzs->rpz_ver; |
| 2490 | view->rpzs->rpz_ver = pview->rpzs->rpz_ver; |
| 2491 | cfg_obj_log(rpz_obj, named_g_lctx, DNS_RPZ_DEBUG_LEVEL1, |
| 2492 | "updated RPZ policy: version %d" , |
| 2493 | view->rpzs->rpz_ver); |
| 2494 | } |
| 2495 | |
| 2496 | if (pview != NULL) |
| 2497 | dns_view_detach(&pview); |
| 2498 | |
| 2499 | return (ISC_R_SUCCESS); |
| 2500 | } |
| 2501 | |
| 2502 | static void |
| 2503 | catz_addmodzone_taskaction(isc_task_t *task, isc_event_t *event0) { |
| 2504 | catz_chgzone_event_t *ev = (catz_chgzone_event_t *) event0; |
| 2505 | isc_result_t result; |
| 2506 | isc_buffer_t namebuf; |
| 2507 | isc_buffer_t *confbuf; |
| 2508 | char nameb[DNS_NAME_FORMATSIZE]; |
| 2509 | const cfg_obj_t *zlist = NULL; |
| 2510 | cfg_obj_t *zoneconf = NULL; |
| 2511 | cfg_obj_t *zoneobj = NULL; |
| 2512 | ns_cfgctx_t *cfg; |
| 2513 | dns_zone_t *zone = NULL; |
| 2514 | |
| 2515 | cfg = (ns_cfgctx_t *) ev->view->new_zone_config; |
| 2516 | if (cfg == NULL) { |
| 2517 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2518 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 2519 | "catz: allow-new-zones statement missing from " |
| 2520 | "config; cannot add zone from the catalog" ); |
| 2521 | goto cleanup; |
| 2522 | } |
| 2523 | |
| 2524 | isc_buffer_init(&namebuf, nameb, DNS_NAME_FORMATSIZE); |
| 2525 | dns_name_totext(dns_catz_entry_getname(ev->entry), true, &namebuf); |
| 2526 | isc_buffer_putuint8(&namebuf, 0); |
| 2527 | |
| 2528 | /* Zone shouldn't already exist */ |
| 2529 | result = dns_zt_find(ev->view->zonetable, |
| 2530 | dns_catz_entry_getname(ev->entry), 0, NULL, &zone); |
| 2531 | |
| 2532 | if (ev->mod == true) { |
| 2533 | if (result != ISC_R_SUCCESS) { |
| 2534 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2535 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2536 | "catz: error \"%s\" while trying to " |
| 2537 | "modify zone \"%s\"" , |
| 2538 | isc_result_totext(result), |
| 2539 | nameb); |
| 2540 | goto cleanup; |
| 2541 | } else { |
| 2542 | if (!dns_zone_getadded(zone)) { |
| 2543 | isc_log_write(named_g_lctx, |
| 2544 | NAMED_LOGCATEGORY_GENERAL, |
| 2545 | NAMED_LOGMODULE_SERVER, |
| 2546 | ISC_LOG_WARNING, |
| 2547 | "catz: " |
| 2548 | "catz_addmodzone_taskaction: " |
| 2549 | "zone '%s' is not a dynamically " |
| 2550 | "added zone" , |
| 2551 | nameb); |
| 2552 | goto cleanup; |
| 2553 | } |
| 2554 | if (dns_zone_get_parentcatz(zone) != ev->origin) { |
| 2555 | isc_log_write(named_g_lctx, |
| 2556 | NAMED_LOGCATEGORY_GENERAL, |
| 2557 | NAMED_LOGMODULE_SERVER, |
| 2558 | ISC_LOG_WARNING, |
| 2559 | "catz: catz_delzone_taskaction: " |
| 2560 | "zone '%s' exists in multiple " |
| 2561 | "catalog zones" , |
| 2562 | nameb); |
| 2563 | goto cleanup; |
| 2564 | } |
| 2565 | dns_zone_detach(&zone); |
| 2566 | } |
| 2567 | |
| 2568 | } else { |
| 2569 | if (result == ISC_R_SUCCESS) { |
| 2570 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2571 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 2572 | "catz: zone \"%s\" is overridden " |
| 2573 | "by explicitly configured zone" , |
| 2574 | nameb); |
| 2575 | goto cleanup; |
| 2576 | } else if (result != ISC_R_NOTFOUND && |
| 2577 | result != DNS_R_PARTIALMATCH) { |
| 2578 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2579 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2580 | "catz: error \"%s\" while trying to " |
| 2581 | "add zone \"%s\"" , |
| 2582 | isc_result_totext(result), |
| 2583 | nameb); |
| 2584 | goto cleanup; |
| 2585 | } else { /* this can happen in case of DNS_R_PARTIALMATCH */ |
| 2586 | if (zone != NULL) |
| 2587 | dns_zone_detach(&zone); |
| 2588 | } |
| 2589 | } |
| 2590 | RUNTIME_CHECK(zone == NULL); |
| 2591 | /* Create a config for new zone */ |
| 2592 | confbuf = NULL; |
| 2593 | result = dns_catz_generate_zonecfg(ev->origin, ev->entry, &confbuf); |
| 2594 | if (result == ISC_R_SUCCESS) { |
| 2595 | cfg_parser_reset(cfg->add_parser); |
| 2596 | result = cfg_parse_buffer(cfg->add_parser, confbuf, "catz" , 0, |
| 2597 | &cfg_type_addzoneconf, 0, &zoneconf); |
| 2598 | isc_buffer_free(&confbuf); |
| 2599 | } |
| 2600 | /* |
| 2601 | * Fail if either dns_catz_generate_zonecfg() or cfg_parse_buffer3() |
| 2602 | * failed. |
| 2603 | */ |
| 2604 | if (result != ISC_R_SUCCESS) { |
| 2605 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2606 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 2607 | "catz: error \"%s\" while trying to generate " |
| 2608 | "config for zone \"%s\"" , |
| 2609 | isc_result_totext(result), nameb); |
| 2610 | goto cleanup; |
| 2611 | } |
| 2612 | CHECK(cfg_map_get(zoneconf, "zone" , &zlist)); |
| 2613 | if (!cfg_obj_islist(zlist)) |
| 2614 | CHECK(ISC_R_FAILURE); |
| 2615 | |
| 2616 | /* For now we only support adding one zone at a time */ |
| 2617 | zoneobj = cfg_listelt_value(cfg_list_first(zlist)); |
| 2618 | |
| 2619 | /* Mark view unfrozen so that zone can be added */ |
| 2620 | |
| 2621 | result = isc_task_beginexclusive(task); |
| 2622 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 2623 | dns_view_thaw(ev->view); |
| 2624 | result = configure_zone(cfg->config, zoneobj, cfg->vconfig, |
| 2625 | ev->cbd->server->mctx, ev->view, |
| 2626 | &ev->cbd->server->viewlist, cfg->actx, |
| 2627 | true, false, ev->mod); |
| 2628 | dns_view_freeze(ev->view); |
| 2629 | isc_task_endexclusive(task); |
| 2630 | |
| 2631 | if (result != ISC_R_SUCCESS) { |
| 2632 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2633 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2634 | "catz: failed to configure zone \"%s\" - %d" , |
| 2635 | nameb, result); |
| 2636 | goto cleanup; |
| 2637 | } |
| 2638 | |
| 2639 | /* Is it there yet? */ |
| 2640 | CHECK(dns_zt_find(ev->view->zonetable, |
| 2641 | dns_catz_entry_getname(ev->entry), 0, NULL, &zone)); |
| 2642 | |
| 2643 | /* |
| 2644 | * Load the zone from the master file. If this fails, we'll |
| 2645 | * need to undo the configuration we've done already. |
| 2646 | */ |
| 2647 | result = dns_zone_load(zone, true); |
| 2648 | if (result != ISC_R_SUCCESS) { |
| 2649 | dns_db_t *dbp = NULL; |
| 2650 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2651 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 2652 | "catz: dns_zone_load() failed " |
| 2653 | "with %s; reverting." , |
| 2654 | isc_result_totext(result)); |
| 2655 | |
| 2656 | /* If the zone loaded partially, unload it */ |
| 2657 | if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) { |
| 2658 | dns_db_detach(&dbp); |
| 2659 | dns_zone_unload(zone); |
| 2660 | } |
| 2661 | |
| 2662 | /* Remove the zone from the zone table */ |
| 2663 | dns_zt_unmount(ev->view->zonetable, zone); |
| 2664 | goto cleanup; |
| 2665 | } |
| 2666 | |
| 2667 | /* Flag the zone as having been added at runtime */ |
| 2668 | dns_zone_setadded(zone, true); |
| 2669 | dns_zone_set_parentcatz(zone, ev->origin); |
| 2670 | |
| 2671 | cleanup: |
| 2672 | if (zone != NULL) |
| 2673 | dns_zone_detach(&zone); |
| 2674 | if (zoneconf != NULL) |
| 2675 | cfg_obj_destroy(cfg->add_parser, &zoneconf); |
| 2676 | dns_catz_entry_detach(ev->origin, &ev->entry); |
| 2677 | dns_catz_zone_detach(&ev->origin); |
| 2678 | dns_view_detach(&ev->view); |
| 2679 | isc_event_free(ISC_EVENT_PTR(&ev)); |
| 2680 | } |
| 2681 | |
| 2682 | static void |
| 2683 | catz_delzone_taskaction(isc_task_t *task, isc_event_t *event0) { |
| 2684 | catz_chgzone_event_t *ev = (catz_chgzone_event_t *) event0; |
| 2685 | isc_result_t result; |
| 2686 | dns_zone_t *zone = NULL; |
| 2687 | dns_db_t *dbp = NULL; |
| 2688 | char cname[DNS_NAME_FORMATSIZE]; |
| 2689 | const char * file; |
| 2690 | |
| 2691 | result = isc_task_beginexclusive(task); |
| 2692 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 2693 | |
| 2694 | dns_name_format(dns_catz_entry_getname(ev->entry), cname, |
| 2695 | DNS_NAME_FORMATSIZE); |
| 2696 | result = dns_zt_find(ev->view->zonetable, |
| 2697 | dns_catz_entry_getname(ev->entry), 0, NULL, &zone); |
| 2698 | if (result != ISC_R_SUCCESS) { |
| 2699 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2700 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2701 | "catz: catz_delzone_taskaction: " |
| 2702 | "zone '%s' not found" , cname); |
| 2703 | goto cleanup; |
| 2704 | } |
| 2705 | |
| 2706 | if (!dns_zone_getadded(zone)) { |
| 2707 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2708 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2709 | "catz: catz_delzone_taskaction: " |
| 2710 | "zone '%s' is not a dynamically added zone" , |
| 2711 | cname); |
| 2712 | goto cleanup; |
| 2713 | } |
| 2714 | |
| 2715 | if (dns_zone_get_parentcatz(zone) != ev->origin) { |
| 2716 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2717 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2718 | "catz: catz_delzone_taskaction: zone " |
| 2719 | "'%s' exists in multiple catalog zones" , |
| 2720 | cname); |
| 2721 | goto cleanup; |
| 2722 | } |
| 2723 | |
| 2724 | /* Stop answering for this zone */ |
| 2725 | if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) { |
| 2726 | dns_db_detach(&dbp); |
| 2727 | dns_zone_unload(zone); |
| 2728 | } |
| 2729 | |
| 2730 | CHECK(dns_zt_unmount(ev->view->zonetable, zone)); |
| 2731 | file = dns_zone_getfile(zone); |
| 2732 | if (file != NULL) |
| 2733 | isc_file_remove(file); |
| 2734 | |
| 2735 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 2736 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 2737 | "catz: catz_delzone_taskaction: " |
| 2738 | "zone '%s' deleted" , cname); |
| 2739 | cleanup: |
| 2740 | isc_task_endexclusive(task); |
| 2741 | if (zone != NULL) |
| 2742 | dns_zone_detach(&zone); |
| 2743 | dns_catz_entry_detach(ev->origin, &ev->entry); |
| 2744 | dns_catz_zone_detach(&ev->origin); |
| 2745 | dns_view_detach(&ev->view); |
| 2746 | isc_event_free(ISC_EVENT_PTR(&ev)); |
| 2747 | } |
| 2748 | |
| 2749 | static isc_result_t |
| 2750 | catz_create_chg_task(dns_catz_entry_t *entry, dns_catz_zone_t *origin, |
| 2751 | dns_view_t *view, isc_taskmgr_t *taskmgr, void *udata, |
| 2752 | isc_eventtype_t type) |
| 2753 | { |
| 2754 | catz_chgzone_event_t *event; |
| 2755 | isc_task_t *task; |
| 2756 | isc_result_t result; |
| 2757 | isc_taskaction_t action = NULL; |
| 2758 | |
| 2759 | switch (type) { |
| 2760 | case DNS_EVENT_CATZADDZONE: |
| 2761 | case DNS_EVENT_CATZMODZONE: |
| 2762 | action = catz_addmodzone_taskaction; |
| 2763 | break; |
| 2764 | case DNS_EVENT_CATZDELZONE: |
| 2765 | action = catz_delzone_taskaction; |
| 2766 | break; |
| 2767 | default: |
| 2768 | REQUIRE(0); |
| 2769 | } |
| 2770 | |
| 2771 | event = (catz_chgzone_event_t *) isc_event_allocate(view->mctx, origin, |
| 2772 | type, action, NULL, |
| 2773 | sizeof(*event)); |
| 2774 | if (event == NULL) |
| 2775 | return (ISC_R_NOMEMORY); |
| 2776 | |
| 2777 | event->cbd = (catz_cb_data_t *) udata; |
| 2778 | event->entry = NULL; |
| 2779 | event->origin = NULL; |
| 2780 | event->view = NULL; |
| 2781 | event->mod = (type == DNS_EVENT_CATZMODZONE); |
| 2782 | dns_catz_entry_attach(entry, &event->entry); |
| 2783 | dns_catz_zone_attach(origin, &event->origin); |
| 2784 | dns_view_attach(view, &event->view); |
| 2785 | |
| 2786 | task = NULL; |
| 2787 | result = isc_taskmgr_excltask(taskmgr, &task); |
| 2788 | REQUIRE(result == ISC_R_SUCCESS); |
| 2789 | isc_task_send(task, ISC_EVENT_PTR(&event)); |
| 2790 | isc_task_detach(&task); |
| 2791 | |
| 2792 | return (ISC_R_SUCCESS); |
| 2793 | } |
| 2794 | |
| 2795 | static isc_result_t |
| 2796 | catz_addzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, |
| 2797 | dns_view_t *view, isc_taskmgr_t *taskmgr, void *udata) |
| 2798 | { |
| 2799 | return (catz_create_chg_task(entry, origin, view, taskmgr, udata, |
| 2800 | DNS_EVENT_CATZADDZONE)); |
| 2801 | } |
| 2802 | |
| 2803 | static isc_result_t |
| 2804 | catz_delzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, |
| 2805 | dns_view_t *view, isc_taskmgr_t *taskmgr, void *udata) |
| 2806 | { |
| 2807 | return (catz_create_chg_task(entry, origin, view, taskmgr, udata, |
| 2808 | DNS_EVENT_CATZDELZONE)); |
| 2809 | } |
| 2810 | |
| 2811 | static isc_result_t |
| 2812 | catz_modzone(dns_catz_entry_t *entry, dns_catz_zone_t *origin, |
| 2813 | dns_view_t *view, isc_taskmgr_t *taskmgr, void *udata) |
| 2814 | { |
| 2815 | return (catz_create_chg_task(entry, origin, view, taskmgr, udata, |
| 2816 | DNS_EVENT_CATZMODZONE)); |
| 2817 | } |
| 2818 | |
| 2819 | static isc_result_t |
| 2820 | configure_catz_zone(dns_view_t *view, const cfg_obj_t *config, |
| 2821 | const cfg_listelt_t *element) |
| 2822 | { |
| 2823 | const cfg_obj_t *catz_obj, *obj; |
| 2824 | dns_catz_zone_t *zone = NULL; |
| 2825 | const char *str; |
| 2826 | isc_result_t result; |
| 2827 | dns_name_t origin; |
| 2828 | dns_catz_options_t *opts; |
| 2829 | dns_view_t *pview = NULL; |
| 2830 | |
| 2831 | dns_name_init(&origin, NULL); |
| 2832 | catz_obj = cfg_listelt_value(element); |
| 2833 | |
| 2834 | str = cfg_obj_asstring(cfg_tuple_get(catz_obj, "zone name" )); |
| 2835 | |
| 2836 | result = dns_name_fromstring(&origin, str, DNS_NAME_DOWNCASE, |
| 2837 | view->mctx); |
| 2838 | if (result == ISC_R_SUCCESS && dns_name_equal(&origin, dns_rootname)) |
| 2839 | result = DNS_R_EMPTYLABEL; |
| 2840 | |
| 2841 | if (result != ISC_R_SUCCESS) { |
| 2842 | cfg_obj_log(catz_obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL, |
| 2843 | "catz: invalid zone name '%s'" , str); |
| 2844 | goto cleanup; |
| 2845 | } |
| 2846 | |
| 2847 | result = dns_catz_add_zone(view->catzs, &origin, &zone); |
| 2848 | if (result != ISC_R_SUCCESS && result != ISC_R_EXISTS) { |
| 2849 | cfg_obj_log(catz_obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL, |
| 2850 | "catz: unable to create catalog zone '%s', " |
| 2851 | "error %s" , |
| 2852 | str, isc_result_totext(result)); |
| 2853 | goto cleanup; |
| 2854 | } |
| 2855 | |
| 2856 | if (result == ISC_R_EXISTS) { |
| 2857 | isc_ht_iter_t *it = NULL; |
| 2858 | |
| 2859 | result = dns_viewlist_find(&named_g_server->viewlist, |
| 2860 | view->name, |
| 2861 | view->rdclass, &pview); |
| 2862 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 2863 | |
| 2864 | /* |
| 2865 | * xxxwpk todo: reconfigure the zone!!!! |
| 2866 | */ |
| 2867 | cfg_obj_log(catz_obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL, |
| 2868 | "catz: catalog zone '%s' will not be reconfigured" , |
| 2869 | str); |
| 2870 | /* |
| 2871 | * We have to walk through all the member zones and attach |
| 2872 | * them to current view |
| 2873 | */ |
| 2874 | result = dns_catz_get_iterator(zone, &it); |
| 2875 | if (result != ISC_R_SUCCESS) { |
| 2876 | cfg_obj_log(catz_obj, named_g_lctx, |
| 2877 | DNS_CATZ_ERROR_LEVEL, |
| 2878 | "catz: unable to create iterator" ); |
| 2879 | goto cleanup; |
| 2880 | } |
| 2881 | |
| 2882 | for (result = isc_ht_iter_first(it); |
| 2883 | result == ISC_R_SUCCESS; |
| 2884 | result = isc_ht_iter_next(it)) |
| 2885 | { |
| 2886 | dns_name_t *name = NULL; |
| 2887 | dns_zone_t *dnszone = NULL; |
| 2888 | dns_catz_entry_t *entry = NULL; |
| 2889 | isc_result_t tresult; |
| 2890 | |
| 2891 | isc_ht_iter_current(it, (void **) &entry); |
| 2892 | name = dns_catz_entry_getname(entry); |
| 2893 | |
| 2894 | tresult = dns_view_findzone(pview, name, &dnszone); |
| 2895 | RUNTIME_CHECK(tresult == ISC_R_SUCCESS); |
| 2896 | |
| 2897 | dns_zone_setview(dnszone, view); |
| 2898 | dns_view_addzone(view, dnszone); |
| 2899 | |
| 2900 | /* |
| 2901 | * The dns_view_findzone() call above increments the |
| 2902 | * zone's reference count, which we need to decrement |
| 2903 | * back. However, as dns_zone_detach() sets the |
| 2904 | * supplied pointer to NULL, calling it is deferred |
| 2905 | * until the dnszone variable is no longer used. |
| 2906 | */ |
| 2907 | dns_zone_detach(&dnszone); |
| 2908 | } |
| 2909 | |
| 2910 | isc_ht_iter_destroy(&it); |
| 2911 | |
| 2912 | result = ISC_R_SUCCESS; |
| 2913 | } |
| 2914 | |
| 2915 | dns_catz_zone_resetdefoptions(zone); |
| 2916 | opts = dns_catz_zone_getdefoptions(zone); |
| 2917 | |
| 2918 | obj = cfg_tuple_get(catz_obj, "default-masters" ); |
| 2919 | if (obj != NULL && cfg_obj_istuple(obj)) |
| 2920 | result = named_config_getipandkeylist(config, obj, |
| 2921 | view->mctx, &opts->masters); |
| 2922 | |
| 2923 | obj = cfg_tuple_get(catz_obj, "in-memory" ); |
| 2924 | if (obj != NULL && cfg_obj_isboolean(obj)) |
| 2925 | opts->in_memory = cfg_obj_asboolean(obj); |
| 2926 | |
| 2927 | obj = cfg_tuple_get(catz_obj, "zone-directory" ); |
| 2928 | if (!opts->in_memory && obj != NULL && cfg_obj_isstring(obj)) { |
| 2929 | opts->zonedir = isc_mem_strdup(view->mctx, |
| 2930 | cfg_obj_asstring(obj)); |
| 2931 | if (isc_file_isdirectory(opts->zonedir) != ISC_R_SUCCESS) { |
| 2932 | cfg_obj_log(obj, named_g_lctx, DNS_CATZ_ERROR_LEVEL, |
| 2933 | "catz: zone-directory '%s' " |
| 2934 | "not found; zone files will not be " |
| 2935 | "saved" , opts->zonedir); |
| 2936 | opts->in_memory = true; |
| 2937 | } |
| 2938 | } |
| 2939 | |
| 2940 | obj = cfg_tuple_get(catz_obj, "min-update-interval" ); |
| 2941 | if (obj != NULL && cfg_obj_isuint32(obj)) |
| 2942 | opts->min_update_interval = cfg_obj_asuint32(obj); |
| 2943 | |
| 2944 | cleanup: |
| 2945 | if (pview != NULL) |
| 2946 | dns_view_detach(&pview); |
| 2947 | dns_name_free(&origin, view->mctx); |
| 2948 | |
| 2949 | return (result); |
| 2950 | } |
| 2951 | |
| 2952 | static catz_cb_data_t ns_catz_cbdata; |
| 2953 | static dns_catz_zonemodmethods_t ns_catz_zonemodmethods = { |
| 2954 | catz_addzone, |
| 2955 | catz_modzone, |
| 2956 | catz_delzone, |
| 2957 | &ns_catz_cbdata |
| 2958 | }; |
| 2959 | |
| 2960 | static isc_result_t |
| 2961 | configure_catz(dns_view_t *view, const cfg_obj_t *config, |
| 2962 | const cfg_obj_t *catz_obj) |
| 2963 | { |
| 2964 | const cfg_listelt_t *zone_element; |
| 2965 | const dns_catz_zones_t *old = NULL; |
| 2966 | dns_view_t *pview = NULL; |
| 2967 | isc_result_t result; |
| 2968 | |
| 2969 | /* xxxwpk TODO do it cleaner, once, somewhere */ |
| 2970 | ns_catz_cbdata.server = named_g_server; |
| 2971 | |
| 2972 | zone_element = cfg_list_first(cfg_tuple_get(catz_obj, "zone list" )); |
| 2973 | if (zone_element == NULL) |
| 2974 | return (ISC_R_SUCCESS); |
| 2975 | |
| 2976 | CHECK(dns_catz_new_zones(&view->catzs, &ns_catz_zonemodmethods, |
| 2977 | view->mctx, named_g_taskmgr, |
| 2978 | named_g_timermgr)); |
| 2979 | |
| 2980 | result = dns_viewlist_find(&named_g_server->viewlist, view->name, |
| 2981 | view->rdclass, &pview); |
| 2982 | if (result == ISC_R_SUCCESS) |
| 2983 | old = pview->catzs; |
| 2984 | |
| 2985 | if (old != NULL) { |
| 2986 | dns_catz_catzs_detach(&view->catzs); |
| 2987 | dns_catz_catzs_attach(pview->catzs, &view->catzs); |
| 2988 | dns_catz_prereconfig(view->catzs); |
| 2989 | } |
| 2990 | |
| 2991 | while (zone_element != NULL) { |
| 2992 | CHECK(configure_catz_zone(view, config, zone_element)); |
| 2993 | zone_element = cfg_list_next(zone_element); |
| 2994 | } |
| 2995 | |
| 2996 | if (old != NULL) |
| 2997 | dns_catz_postreconfig(view->catzs); |
| 2998 | |
| 2999 | result = ISC_R_SUCCESS; |
| 3000 | |
| 3001 | cleanup: |
| 3002 | if (pview != NULL) |
| 3003 | dns_view_detach(&pview); |
| 3004 | |
| 3005 | return (result); |
| 3006 | } |
| 3007 | |
| 3008 | #define CHECK_RRL(cond, pat, val1, val2) \ |
| 3009 | do { \ |
| 3010 | if (!(cond)) { \ |
| 3011 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, \ |
| 3012 | pat, val1, val2); \ |
| 3013 | result = ISC_R_RANGE; \ |
| 3014 | goto cleanup; \ |
| 3015 | } \ |
| 3016 | } while (/*CONSTCOND*/ 0) |
| 3017 | |
| 3018 | #define CHECK_RRL_RATE(rate, def, max_rate, name) \ |
| 3019 | do { \ |
| 3020 | obj = NULL; \ |
| 3021 | rrl->rate.str = name; \ |
| 3022 | result = cfg_map_get(map, name, &obj); \ |
| 3023 | if (result == ISC_R_SUCCESS) { \ |
| 3024 | rrl->rate.r = cfg_obj_asuint32(obj); \ |
| 3025 | CHECK_RRL(rrl->rate.r <= max_rate, \ |
| 3026 | name" %d > %d", \ |
| 3027 | rrl->rate.r, max_rate); \ |
| 3028 | } else { \ |
| 3029 | rrl->rate.r = def; \ |
| 3030 | } \ |
| 3031 | rrl->rate.scaled = rrl->rate.r; \ |
| 3032 | } while (/*CONSTCOND*/0) |
| 3033 | |
| 3034 | static isc_result_t |
| 3035 | configure_rrl(dns_view_t *view, const cfg_obj_t *config, const cfg_obj_t *map) { |
| 3036 | const cfg_obj_t *obj; |
| 3037 | dns_rrl_t *rrl; |
| 3038 | isc_result_t result; |
| 3039 | int min_entries, i, j; |
| 3040 | |
| 3041 | /* |
| 3042 | * Most DNS servers have few clients, but intentinally open |
| 3043 | * recursive and authoritative servers often have many. |
| 3044 | * So start with a small number of entries unless told otherwise |
| 3045 | * to reduce cold-start costs. |
| 3046 | */ |
| 3047 | min_entries = 500; |
| 3048 | obj = NULL; |
| 3049 | result = cfg_map_get(map, "min-table-size" , &obj); |
| 3050 | if (result == ISC_R_SUCCESS) { |
| 3051 | min_entries = cfg_obj_asuint32(obj); |
| 3052 | if (min_entries < 1) |
| 3053 | min_entries = 1; |
| 3054 | } |
| 3055 | result = dns_rrl_init(&rrl, view, min_entries); |
| 3056 | if (result != ISC_R_SUCCESS) |
| 3057 | return (result); |
| 3058 | |
| 3059 | i = ISC_MAX(20000, min_entries); |
| 3060 | obj = NULL; |
| 3061 | result = cfg_map_get(map, "max-table-size" , &obj); |
| 3062 | if (result == ISC_R_SUCCESS) { |
| 3063 | i = cfg_obj_asuint32(obj); |
| 3064 | CHECK_RRL(i >= min_entries, |
| 3065 | "max-table-size %d < min-table-size %d" , |
| 3066 | i, min_entries); |
| 3067 | } |
| 3068 | rrl->max_entries = i; |
| 3069 | |
| 3070 | CHECK_RRL_RATE(responses_per_second, 0, DNS_RRL_MAX_RATE, |
| 3071 | "responses-per-second" ); |
| 3072 | CHECK_RRL_RATE(referrals_per_second, |
| 3073 | rrl->responses_per_second.r, DNS_RRL_MAX_RATE, |
| 3074 | "referrals-per-second" ); |
| 3075 | CHECK_RRL_RATE(nodata_per_second, |
| 3076 | rrl->responses_per_second.r, DNS_RRL_MAX_RATE, |
| 3077 | "nodata-per-second" ); |
| 3078 | CHECK_RRL_RATE(nxdomains_per_second, |
| 3079 | rrl->responses_per_second.r, DNS_RRL_MAX_RATE, |
| 3080 | "nxdomains-per-second" ); |
| 3081 | CHECK_RRL_RATE(errors_per_second, |
| 3082 | rrl->responses_per_second.r, DNS_RRL_MAX_RATE, |
| 3083 | "errors-per-second" ); |
| 3084 | |
| 3085 | CHECK_RRL_RATE(all_per_second, 0, DNS_RRL_MAX_RATE, |
| 3086 | "all-per-second" ); |
| 3087 | |
| 3088 | CHECK_RRL_RATE(slip, 2, DNS_RRL_MAX_SLIP, |
| 3089 | "slip" ); |
| 3090 | |
| 3091 | i = 15; |
| 3092 | obj = NULL; |
| 3093 | result = cfg_map_get(map, "window" , &obj); |
| 3094 | if (result == ISC_R_SUCCESS) { |
| 3095 | i = cfg_obj_asuint32(obj); |
| 3096 | CHECK_RRL(i >= 1 && i <= DNS_RRL_MAX_WINDOW, |
| 3097 | "window %d < 1 or > %d" , i, DNS_RRL_MAX_WINDOW); |
| 3098 | } |
| 3099 | rrl->window = i; |
| 3100 | |
| 3101 | i = 0; |
| 3102 | obj = NULL; |
| 3103 | result = cfg_map_get(map, "qps-scale" , &obj); |
| 3104 | if (result == ISC_R_SUCCESS) { |
| 3105 | i = cfg_obj_asuint32(obj); |
| 3106 | CHECK_RRL(i >= 1, "invalid 'qps-scale %d'%s" , i, "" ); |
| 3107 | } |
| 3108 | rrl->qps_scale = i; |
| 3109 | rrl->qps = 1.0; |
| 3110 | |
| 3111 | i = 24; |
| 3112 | obj = NULL; |
| 3113 | result = cfg_map_get(map, "ipv4-prefix-length" , &obj); |
| 3114 | if (result == ISC_R_SUCCESS) { |
| 3115 | i = cfg_obj_asuint32(obj); |
| 3116 | CHECK_RRL(i >= 8 && i <= 32, |
| 3117 | "invalid 'ipv4-prefix-length %d'%s" , i, "" ); |
| 3118 | } |
| 3119 | rrl->ipv4_prefixlen = i; |
| 3120 | if (i == 32) |
| 3121 | rrl->ipv4_mask = 0xffffffff; |
| 3122 | else |
| 3123 | rrl->ipv4_mask = htonl(0xffffffff << (32-i)); |
| 3124 | |
| 3125 | i = 56; |
| 3126 | obj = NULL; |
| 3127 | result = cfg_map_get(map, "ipv6-prefix-length" , &obj); |
| 3128 | if (result == ISC_R_SUCCESS) { |
| 3129 | i = cfg_obj_asuint32(obj); |
| 3130 | CHECK_RRL(i >= 16 && i <= DNS_RRL_MAX_PREFIX, |
| 3131 | "ipv6-prefix-length %d < 16 or > %d" , |
| 3132 | i, DNS_RRL_MAX_PREFIX); |
| 3133 | } |
| 3134 | rrl->ipv6_prefixlen = i; |
| 3135 | for (j = 0; j < 4; ++j) { |
| 3136 | if (i <= 0) { |
| 3137 | rrl->ipv6_mask[j] = 0; |
| 3138 | } else if (i < 32) { |
| 3139 | rrl->ipv6_mask[j] = htonl(0xffffffff << (32-i)); |
| 3140 | } else { |
| 3141 | rrl->ipv6_mask[j] = 0xffffffff; |
| 3142 | } |
| 3143 | i -= 32; |
| 3144 | } |
| 3145 | |
| 3146 | obj = NULL; |
| 3147 | result = cfg_map_get(map, "exempt-clients" , &obj); |
| 3148 | if (result == ISC_R_SUCCESS) { |
| 3149 | result = cfg_acl_fromconfig(obj, config, named_g_lctx, |
| 3150 | named_g_aclconfctx, named_g_mctx, |
| 3151 | 0, &rrl->exempt); |
| 3152 | CHECK_RRL(result == ISC_R_SUCCESS, |
| 3153 | "invalid %s%s" , "address match list" , "" ); |
| 3154 | } |
| 3155 | |
| 3156 | obj = NULL; |
| 3157 | result = cfg_map_get(map, "log-only" , &obj); |
| 3158 | if (result == ISC_R_SUCCESS && cfg_obj_asboolean(obj)) |
| 3159 | rrl->log_only = true; |
| 3160 | else |
| 3161 | rrl->log_only = false; |
| 3162 | |
| 3163 | return (ISC_R_SUCCESS); |
| 3164 | |
| 3165 | cleanup: |
| 3166 | dns_rrl_view_destroy(view); |
| 3167 | return (result); |
| 3168 | } |
| 3169 | |
| 3170 | static isc_result_t |
| 3171 | add_soa(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name, |
| 3172 | const dns_name_t *origin, const dns_name_t *contact) |
| 3173 | { |
| 3174 | dns_dbnode_t *node = NULL; |
| 3175 | dns_rdata_t rdata = DNS_RDATA_INIT; |
| 3176 | dns_rdatalist_t rdatalist; |
| 3177 | dns_rdataset_t rdataset; |
| 3178 | isc_result_t result; |
| 3179 | unsigned char buf[DNS_SOA_BUFFERSIZE]; |
| 3180 | |
| 3181 | CHECK(dns_soa_buildrdata(origin, contact, dns_db_class(db), |
| 3182 | 0, 28800, 7200, 604800, 86400, buf, &rdata)); |
| 3183 | |
| 3184 | dns_rdatalist_init(&rdatalist); |
| 3185 | rdatalist.type = rdata.type; |
| 3186 | rdatalist.rdclass = rdata.rdclass; |
| 3187 | rdatalist.ttl = 86400; |
| 3188 | ISC_LIST_APPEND(rdatalist.rdata, &rdata, link); |
| 3189 | |
| 3190 | dns_rdataset_init(&rdataset); |
| 3191 | CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset)); |
| 3192 | CHECK(dns_db_findnode(db, name, true, &node)); |
| 3193 | CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL)); |
| 3194 | |
| 3195 | cleanup: |
| 3196 | if (node != NULL) |
| 3197 | dns_db_detachnode(db, &node); |
| 3198 | return (result); |
| 3199 | } |
| 3200 | |
| 3201 | static isc_result_t |
| 3202 | add_ns(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name, |
| 3203 | const dns_name_t *nsname) |
| 3204 | { |
| 3205 | dns_dbnode_t *node = NULL; |
| 3206 | dns_rdata_ns_t ns; |
| 3207 | dns_rdata_t rdata = DNS_RDATA_INIT; |
| 3208 | dns_rdatalist_t rdatalist; |
| 3209 | dns_rdataset_t rdataset; |
| 3210 | isc_result_t result; |
| 3211 | isc_buffer_t b; |
| 3212 | unsigned char buf[DNS_NAME_MAXWIRE]; |
| 3213 | |
| 3214 | isc_buffer_init(&b, buf, sizeof(buf)); |
| 3215 | |
| 3216 | ns.common.rdtype = dns_rdatatype_ns; |
| 3217 | ns.common.rdclass = dns_db_class(db); |
| 3218 | ns.mctx = NULL; |
| 3219 | dns_name_init(&ns.name, NULL); |
| 3220 | dns_name_clone(nsname, &ns.name); |
| 3221 | CHECK(dns_rdata_fromstruct(&rdata, dns_db_class(db), dns_rdatatype_ns, |
| 3222 | &ns, &b)); |
| 3223 | |
| 3224 | dns_rdatalist_init(&rdatalist); |
| 3225 | rdatalist.type = rdata.type; |
| 3226 | rdatalist.rdclass = rdata.rdclass; |
| 3227 | rdatalist.ttl = 86400; |
| 3228 | ISC_LIST_APPEND(rdatalist.rdata, &rdata, link); |
| 3229 | |
| 3230 | dns_rdataset_init(&rdataset); |
| 3231 | CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset)); |
| 3232 | CHECK(dns_db_findnode(db, name, true, &node)); |
| 3233 | CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL)); |
| 3234 | |
| 3235 | cleanup: |
| 3236 | if (node != NULL) |
| 3237 | dns_db_detachnode(db, &node); |
| 3238 | return (result); |
| 3239 | } |
| 3240 | |
| 3241 | static isc_result_t |
| 3242 | create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view, |
| 3243 | const cfg_obj_t *zonelist, const char **empty_dbtype, |
| 3244 | int empty_dbtypec, dns_zonestat_level_t statlevel) |
| 3245 | { |
| 3246 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 3247 | const cfg_listelt_t *element; |
| 3248 | const cfg_obj_t *obj; |
| 3249 | const cfg_obj_t *zconfig; |
| 3250 | const cfg_obj_t *zoptions; |
| 3251 | const char *rbt_dbtype[4] = { "rbt" }; |
| 3252 | const char *sep = ": view " ; |
| 3253 | const char *str; |
| 3254 | const char *viewname = view->name; |
| 3255 | dns_db_t *db = NULL; |
| 3256 | dns_dbversion_t *version = NULL; |
| 3257 | dns_fixedname_t cfixed; |
| 3258 | dns_fixedname_t fixed; |
| 3259 | dns_fixedname_t nsfixed; |
| 3260 | dns_name_t *contact; |
| 3261 | dns_name_t *ns; |
| 3262 | dns_name_t *zname; |
| 3263 | dns_zone_t *myzone = NULL; |
| 3264 | int rbt_dbtypec = 1; |
| 3265 | isc_result_t result; |
| 3266 | dns_namereln_t namereln; |
| 3267 | int order; |
| 3268 | unsigned int nlabels; |
| 3269 | |
| 3270 | zname = dns_fixedname_initname(&fixed); |
| 3271 | ns = dns_fixedname_initname(&nsfixed); |
| 3272 | contact = dns_fixedname_initname(&cfixed); |
| 3273 | |
| 3274 | /* |
| 3275 | * Look for forward "zones" beneath this empty zone and if so |
| 3276 | * create a custom db for the empty zone. |
| 3277 | */ |
| 3278 | for (element = cfg_list_first(zonelist); |
| 3279 | element != NULL; |
| 3280 | element = cfg_list_next(element)) { |
| 3281 | |
| 3282 | zconfig = cfg_listelt_value(element); |
| 3283 | str = cfg_obj_asstring(cfg_tuple_get(zconfig, "name" )); |
| 3284 | CHECK(dns_name_fromstring(zname, str, 0, NULL)); |
| 3285 | namereln = dns_name_fullcompare(zname, name, &order, &nlabels); |
| 3286 | if (namereln != dns_namereln_subdomain) |
| 3287 | continue; |
| 3288 | |
| 3289 | zoptions = cfg_tuple_get(zconfig, "options" ); |
| 3290 | |
| 3291 | obj = NULL; |
| 3292 | (void)cfg_map_get(zoptions, "type" , &obj); |
| 3293 | if (obj != NULL && |
| 3294 | strcasecmp(cfg_obj_asstring(obj), "forward" ) == 0) { |
| 3295 | obj = NULL; |
| 3296 | (void)cfg_map_get(zoptions, "forward" , &obj); |
| 3297 | if (obj == NULL) |
| 3298 | continue; |
| 3299 | if (strcasecmp(cfg_obj_asstring(obj), "only" ) != 0) |
| 3300 | continue; |
| 3301 | } |
| 3302 | if (db == NULL) { |
| 3303 | CHECK(dns_db_create(view->mctx, "rbt" , name, |
| 3304 | dns_dbtype_zone, view->rdclass, |
| 3305 | 0, NULL, &db)); |
| 3306 | CHECK(dns_db_newversion(db, &version)); |
| 3307 | if (strcmp(empty_dbtype[2], "@" ) == 0) |
| 3308 | dns_name_clone(name, ns); |
| 3309 | else |
| 3310 | CHECK(dns_name_fromstring(ns, empty_dbtype[2], |
| 3311 | 0, NULL)); |
| 3312 | CHECK(dns_name_fromstring(contact, empty_dbtype[3], |
| 3313 | 0, NULL)); |
| 3314 | CHECK(add_soa(db, version, name, ns, contact)); |
| 3315 | CHECK(add_ns(db, version, name, ns)); |
| 3316 | } |
| 3317 | CHECK(add_ns(db, version, zname, dns_rootname)); |
| 3318 | } |
| 3319 | |
| 3320 | /* |
| 3321 | * Is the existing zone the ok to use? |
| 3322 | */ |
| 3323 | if (zone != NULL) { |
| 3324 | unsigned int typec; |
| 3325 | const char **dbargv; |
| 3326 | |
| 3327 | if (db != NULL) { |
| 3328 | typec = rbt_dbtypec; |
| 3329 | dbargv = rbt_dbtype; |
| 3330 | } else { |
| 3331 | typec = empty_dbtypec; |
| 3332 | dbargv = empty_dbtype; |
| 3333 | } |
| 3334 | |
| 3335 | result = check_dbtype(zone, typec, dbargv, view->mctx); |
| 3336 | if (result != ISC_R_SUCCESS) |
| 3337 | zone = NULL; |
| 3338 | |
| 3339 | if (zone != NULL && dns_zone_gettype(zone) != dns_zone_master) |
| 3340 | zone = NULL; |
| 3341 | if (zone != NULL && dns_zone_getfile(zone) != NULL) |
| 3342 | zone = NULL; |
| 3343 | if (zone != NULL) { |
| 3344 | dns_zone_getraw(zone, &myzone); |
| 3345 | if (myzone != NULL) { |
| 3346 | dns_zone_detach(&myzone); |
| 3347 | zone = NULL; |
| 3348 | } |
| 3349 | } |
| 3350 | } |
| 3351 | |
| 3352 | if (zone == NULL) { |
| 3353 | CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &myzone)); |
| 3354 | zone = myzone; |
| 3355 | CHECK(dns_zone_setorigin(zone, name)); |
| 3356 | CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone)); |
| 3357 | if (db == NULL) |
| 3358 | CHECK(dns_zone_setdbtype(zone, empty_dbtypec, |
| 3359 | empty_dbtype)); |
| 3360 | dns_zone_setclass(zone, view->rdclass); |
| 3361 | dns_zone_settype(zone, dns_zone_master); |
| 3362 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 3363 | } |
| 3364 | |
| 3365 | dns_zone_setoption(zone, ~DNS_ZONEOPT_NOCHECKNS, false); |
| 3366 | dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true); |
| 3367 | dns_zone_setnotifytype(zone, dns_notifytype_no); |
| 3368 | dns_zone_setdialup(zone, dns_dialuptype_no); |
| 3369 | dns_zone_setautomatic(zone, true); |
| 3370 | if (view->queryacl != NULL) |
| 3371 | dns_zone_setqueryacl(zone, view->queryacl); |
| 3372 | else |
| 3373 | dns_zone_clearqueryacl(zone); |
| 3374 | if (view->queryonacl != NULL) |
| 3375 | dns_zone_setqueryonacl(zone, view->queryonacl); |
| 3376 | else |
| 3377 | dns_zone_clearqueryonacl(zone); |
| 3378 | dns_zone_clearupdateacl(zone); |
| 3379 | if (view->transferacl != NULL) |
| 3380 | dns_zone_setxfracl(zone, view->transferacl); |
| 3381 | else |
| 3382 | dns_zone_clearxfracl(zone); |
| 3383 | |
| 3384 | CHECK(setquerystats(zone, view->mctx, statlevel)); |
| 3385 | if (db != NULL) { |
| 3386 | dns_db_closeversion(db, &version, true); |
| 3387 | CHECK(dns_zone_replacedb(zone, db, false)); |
| 3388 | } |
| 3389 | dns_zone_setoption(zone, DNS_ZONEOPT_AUTOEMPTY, true); |
| 3390 | dns_zone_setview(zone, view); |
| 3391 | CHECK(dns_view_addzone(view, zone)); |
| 3392 | |
| 3393 | if (!strcmp(viewname, "_default" )) { |
| 3394 | sep = "" ; |
| 3395 | viewname = "" ; |
| 3396 | } |
| 3397 | dns_name_format(name, namebuf, sizeof(namebuf)); |
| 3398 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_ZONELOAD, |
| 3399 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 3400 | "automatic empty zone%s%s: %s" , |
| 3401 | sep, viewname, namebuf); |
| 3402 | |
| 3403 | cleanup: |
| 3404 | if (myzone != NULL) |
| 3405 | dns_zone_detach(&myzone); |
| 3406 | if (version != NULL) |
| 3407 | dns_db_closeversion(db, &version, false); |
| 3408 | if (db != NULL) |
| 3409 | dns_db_detach(&db); |
| 3410 | |
| 3411 | INSIST(version == NULL); |
| 3412 | |
| 3413 | return (result); |
| 3414 | } |
| 3415 | |
| 3416 | #ifdef HAVE_DNSTAP |
| 3417 | static isc_result_t |
| 3418 | configure_dnstap(const cfg_obj_t **maps, dns_view_t *view) { |
| 3419 | isc_result_t result; |
| 3420 | const cfg_obj_t *obj, *obj2; |
| 3421 | const cfg_listelt_t *element; |
| 3422 | const char *dpath = named_g_defaultdnstap; |
| 3423 | const cfg_obj_t *dlist = NULL; |
| 3424 | dns_dtmsgtype_t dttypes = 0; |
| 3425 | unsigned int i; |
| 3426 | struct fstrm_iothr_options *fopt = NULL; |
| 3427 | |
| 3428 | result = named_config_get(maps, "dnstap" , &dlist); |
| 3429 | if (result != ISC_R_SUCCESS) |
| 3430 | return (ISC_R_SUCCESS); |
| 3431 | |
| 3432 | for (element = cfg_list_first(dlist); |
| 3433 | element != NULL; |
| 3434 | element = cfg_list_next(element)) |
| 3435 | { |
| 3436 | const char *str; |
| 3437 | dns_dtmsgtype_t dt = 0; |
| 3438 | |
| 3439 | obj = cfg_listelt_value(element); |
| 3440 | obj2 = cfg_tuple_get(obj, "type" ); |
| 3441 | str = cfg_obj_asstring(obj2); |
| 3442 | if (strcasecmp(str, "client" ) == 0) { |
| 3443 | dt |= DNS_DTTYPE_CQ|DNS_DTTYPE_CR; |
| 3444 | } else if (strcasecmp(str, "auth" ) == 0) { |
| 3445 | dt |= DNS_DTTYPE_AQ|DNS_DTTYPE_AR; |
| 3446 | } else if (strcasecmp(str, "resolver" ) == 0) { |
| 3447 | dt |= DNS_DTTYPE_RQ|DNS_DTTYPE_RR; |
| 3448 | } else if (strcasecmp(str, "forwarder" ) == 0) { |
| 3449 | dt |= DNS_DTTYPE_FQ|DNS_DTTYPE_FR; |
| 3450 | } else if (strcasecmp(str, "update" ) == 0) { |
| 3451 | dt |= DNS_DTTYPE_UQ|DNS_DTTYPE_UR; |
| 3452 | } else if (strcasecmp(str, "all" ) == 0) { |
| 3453 | dt |= DNS_DTTYPE_CQ|DNS_DTTYPE_CR| |
| 3454 | DNS_DTTYPE_AQ|DNS_DTTYPE_AR| |
| 3455 | DNS_DTTYPE_RQ|DNS_DTTYPE_RR| |
| 3456 | DNS_DTTYPE_FQ|DNS_DTTYPE_FR| |
| 3457 | DNS_DTTYPE_UQ|DNS_DTTYPE_UR; |
| 3458 | } |
| 3459 | |
| 3460 | obj2 = cfg_tuple_get(obj, "mode" ); |
| 3461 | if (obj2 == NULL || cfg_obj_isvoid(obj2)) { |
| 3462 | dttypes |= dt; |
| 3463 | continue; |
| 3464 | } |
| 3465 | |
| 3466 | str = cfg_obj_asstring(obj2); |
| 3467 | if (strcasecmp(str, "query" ) == 0) { |
| 3468 | dt &= ~DNS_DTTYPE_RESPONSE; |
| 3469 | } else if (strcasecmp(str, "response" ) == 0) { |
| 3470 | dt &= ~DNS_DTTYPE_QUERY; |
| 3471 | } |
| 3472 | |
| 3473 | dttypes |= dt; |
| 3474 | } |
| 3475 | |
| 3476 | if (named_g_server->dtenv == NULL && dttypes != 0) { |
| 3477 | dns_dtmode_t dmode; |
| 3478 | uint64_t max_size = 0; |
| 3479 | uint32_t rolls = 0; |
| 3480 | isc_log_rollsuffix_t suffix = isc_log_rollsuffix_increment; |
| 3481 | |
| 3482 | obj = NULL; |
| 3483 | CHECKM(named_config_get(maps, "dnstap-output" , &obj), |
| 3484 | "'dnstap-output' must be set if 'dnstap' is set" ); |
| 3485 | |
| 3486 | obj2 = cfg_tuple_get(obj, "mode" ); |
| 3487 | if (obj2 == NULL) |
| 3488 | CHECKM(ISC_R_FAILURE, "dnstap-output mode not found" ); |
| 3489 | if (strcasecmp(cfg_obj_asstring(obj2), "file" ) == 0) |
| 3490 | dmode = dns_dtmode_file; |
| 3491 | else |
| 3492 | dmode = dns_dtmode_unix; |
| 3493 | |
| 3494 | obj2 = cfg_tuple_get(obj, "path" ); |
| 3495 | if (obj2 == NULL) |
| 3496 | CHECKM(ISC_R_FAILURE, "dnstap-output path not found" ); |
| 3497 | |
| 3498 | dpath = cfg_obj_asstring(obj2); |
| 3499 | |
| 3500 | obj2 = cfg_tuple_get(obj, "size" ); |
| 3501 | if (obj2 != NULL && cfg_obj_isuint64(obj2)) { |
| 3502 | max_size = cfg_obj_asuint64(obj2); |
| 3503 | if (max_size > SIZE_MAX) { |
| 3504 | cfg_obj_log(obj2, named_g_lctx, |
| 3505 | ISC_LOG_WARNING, |
| 3506 | "'dnstap-output size " |
| 3507 | "%" PRIu64 "' " |
| 3508 | "is too large for this " |
| 3509 | "system; reducing to %lu" , |
| 3510 | max_size, (unsigned long)SIZE_MAX); |
| 3511 | max_size = SIZE_MAX; |
| 3512 | } |
| 3513 | } |
| 3514 | |
| 3515 | obj2 = cfg_tuple_get(obj, "versions" ); |
| 3516 | if (obj2 != NULL && cfg_obj_isuint32(obj2)) { |
| 3517 | rolls = cfg_obj_asuint32(obj2); |
| 3518 | } else { |
| 3519 | rolls = ISC_LOG_ROLLINFINITE; |
| 3520 | } |
| 3521 | |
| 3522 | obj2 = cfg_tuple_get(obj, "suffix" ); |
| 3523 | if (obj2 != NULL && cfg_obj_isstring(obj2) && |
| 3524 | strcasecmp(cfg_obj_asstring(obj2), "timestamp" ) == 0) |
| 3525 | { |
| 3526 | suffix = isc_log_rollsuffix_timestamp; |
| 3527 | } |
| 3528 | |
| 3529 | fopt = fstrm_iothr_options_init(); |
| 3530 | fstrm_iothr_options_set_num_input_queues(fopt, named_g_cpus); |
| 3531 | fstrm_iothr_options_set_queue_model(fopt, |
| 3532 | FSTRM_IOTHR_QUEUE_MODEL_MPSC); |
| 3533 | |
| 3534 | obj = NULL; |
| 3535 | result = named_config_get(maps, "fstrm-set-buffer-hint" , &obj); |
| 3536 | if (result == ISC_R_SUCCESS) { |
| 3537 | i = cfg_obj_asuint32(obj); |
| 3538 | fstrm_iothr_options_set_buffer_hint(fopt, i); |
| 3539 | } |
| 3540 | |
| 3541 | obj = NULL; |
| 3542 | result = named_config_get(maps, "fstrm-set-flush-timeout" , |
| 3543 | &obj); |
| 3544 | if (result == ISC_R_SUCCESS) { |
| 3545 | i = cfg_obj_asuint32(obj); |
| 3546 | fstrm_iothr_options_set_flush_timeout(fopt, i); |
| 3547 | } |
| 3548 | |
| 3549 | obj = NULL; |
| 3550 | result = named_config_get(maps, "fstrm-set-input-queue-size" , |
| 3551 | &obj); |
| 3552 | if (result == ISC_R_SUCCESS) { |
| 3553 | i = cfg_obj_asuint32(obj); |
| 3554 | fstrm_iothr_options_set_input_queue_size(fopt, i); |
| 3555 | } |
| 3556 | |
| 3557 | obj = NULL; |
| 3558 | result = named_config_get(maps, |
| 3559 | "fstrm-set-output-notify-threshold" , |
| 3560 | &obj); |
| 3561 | if (result == ISC_R_SUCCESS) { |
| 3562 | i = cfg_obj_asuint32(obj); |
| 3563 | fstrm_iothr_options_set_queue_notify_threshold(fopt, |
| 3564 | i); |
| 3565 | } |
| 3566 | |
| 3567 | obj = NULL; |
| 3568 | result = named_config_get(maps, "fstrm-set-output-queue-model" , |
| 3569 | &obj); |
| 3570 | if (result == ISC_R_SUCCESS) { |
| 3571 | if (strcasecmp(cfg_obj_asstring(obj), "spsc" ) == 0) |
| 3572 | i = FSTRM_IOTHR_QUEUE_MODEL_SPSC; |
| 3573 | else |
| 3574 | i = FSTRM_IOTHR_QUEUE_MODEL_MPSC; |
| 3575 | fstrm_iothr_options_set_queue_model(fopt, i); |
| 3576 | } |
| 3577 | |
| 3578 | obj = NULL; |
| 3579 | result = named_config_get(maps, "fstrm-set-output-queue-size" , |
| 3580 | &obj); |
| 3581 | if (result == ISC_R_SUCCESS) { |
| 3582 | i = cfg_obj_asuint32(obj); |
| 3583 | fstrm_iothr_options_set_output_queue_size(fopt, i); |
| 3584 | } |
| 3585 | |
| 3586 | obj = NULL; |
| 3587 | result = named_config_get(maps, "fstrm-set-reopen-interval" , |
| 3588 | &obj); |
| 3589 | if (result == ISC_R_SUCCESS) { |
| 3590 | i = cfg_obj_asuint32(obj); |
| 3591 | fstrm_iothr_options_set_reopen_interval(fopt, i); |
| 3592 | } |
| 3593 | |
| 3594 | CHECKM(dns_dt_create(named_g_mctx, dmode, dpath, |
| 3595 | &fopt, named_g_server->task, |
| 3596 | &named_g_server->dtenv), |
| 3597 | "unable to create dnstap environment" ); |
| 3598 | |
| 3599 | CHECKM(dns_dt_setupfile(named_g_server->dtenv, |
| 3600 | max_size, rolls, suffix), |
| 3601 | "unable to set up dnstap logfile" ); |
| 3602 | } |
| 3603 | |
| 3604 | if (named_g_server->dtenv == NULL) |
| 3605 | return (ISC_R_SUCCESS); |
| 3606 | |
| 3607 | obj = NULL; |
| 3608 | result = named_config_get(maps, "dnstap-version" , &obj); |
| 3609 | if (result != ISC_R_SUCCESS) { |
| 3610 | /* not specified; use the product and version */ |
| 3611 | dns_dt_setversion(named_g_server->dtenv, PRODUCT " " VERSION); |
| 3612 | } else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) { |
| 3613 | /* Quoted string */ |
| 3614 | dns_dt_setversion(named_g_server->dtenv, cfg_obj_asstring(obj)); |
| 3615 | } |
| 3616 | |
| 3617 | obj = NULL; |
| 3618 | result = named_config_get(maps, "dnstap-identity" , &obj); |
| 3619 | if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) { |
| 3620 | /* "hostname" is interpreted as boolean true */ |
| 3621 | char buf[256]; |
| 3622 | result = named_os_gethostname(buf, sizeof(buf)); |
| 3623 | if (result == ISC_R_SUCCESS) |
| 3624 | dns_dt_setidentity(named_g_server->dtenv, buf); |
| 3625 | } else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) { |
| 3626 | /* Quoted string */ |
| 3627 | dns_dt_setidentity(named_g_server->dtenv, |
| 3628 | cfg_obj_asstring(obj)); |
| 3629 | } |
| 3630 | |
| 3631 | dns_dt_attach(named_g_server->dtenv, &view->dtenv); |
| 3632 | view->dttypes = dttypes; |
| 3633 | |
| 3634 | result = ISC_R_SUCCESS; |
| 3635 | |
| 3636 | cleanup: |
| 3637 | if (fopt != NULL) |
| 3638 | fstrm_iothr_options_destroy(&fopt); |
| 3639 | |
| 3640 | return (result); |
| 3641 | } |
| 3642 | #endif /* HAVE_DNSTAP */ |
| 3643 | |
| 3644 | static isc_result_t |
| 3645 | create_mapped_acl(void) { |
| 3646 | isc_result_t result; |
| 3647 | dns_acl_t *acl = NULL; |
| 3648 | struct in6_addr in6 = IN6ADDR_V4MAPPED_INIT; |
| 3649 | isc_netaddr_t addr; |
| 3650 | |
| 3651 | isc_netaddr_fromin6(&addr, &in6); |
| 3652 | |
| 3653 | result = dns_acl_create(named_g_mctx, 1, &acl); |
| 3654 | if (result != ISC_R_SUCCESS) |
| 3655 | return (result); |
| 3656 | |
| 3657 | result = dns_iptable_addprefix(acl->iptable, &addr, 96, true); |
| 3658 | if (result == ISC_R_SUCCESS) |
| 3659 | dns_acl_attach(acl, &named_g_mapped); |
| 3660 | dns_acl_detach(&acl); |
| 3661 | return (result); |
| 3662 | } |
| 3663 | |
| 3664 | #ifdef HAVE_DLOPEN |
| 3665 | /*% |
| 3666 | * A callback for the cfg_pluginlist_foreach() call in configure_view() below. |
| 3667 | * If registering any plugin fails, registering subsequent ones is not |
| 3668 | * attempted. |
| 3669 | */ |
| 3670 | static isc_result_t |
| 3671 | register_one_plugin(const cfg_obj_t *config, const cfg_obj_t *obj, |
| 3672 | const char *plugin_path, const char *parameters, |
| 3673 | void *callback_data) |
| 3674 | { |
| 3675 | dns_view_t *view = callback_data; |
| 3676 | char full_path[PATH_MAX]; |
| 3677 | isc_result_t result; |
| 3678 | |
| 3679 | result = ns_plugin_expandpath(plugin_path, |
| 3680 | full_path, sizeof(full_path)); |
| 3681 | if (result != ISC_R_SUCCESS) { |
| 3682 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 3683 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 3684 | "%s: plugin configuration failed: " |
| 3685 | "unable to get full plugin path: %s" , |
| 3686 | plugin_path, isc_result_totext(result)); |
| 3687 | return (result); |
| 3688 | } |
| 3689 | |
| 3690 | result = ns_plugin_register(full_path, parameters, config, |
| 3691 | cfg_obj_file(obj), cfg_obj_line(obj), |
| 3692 | named_g_mctx, named_g_lctx, |
| 3693 | named_g_aclconfctx, view); |
| 3694 | if (result != ISC_R_SUCCESS) { |
| 3695 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 3696 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 3697 | "%s: plugin configuration failed: %s" , |
| 3698 | full_path, isc_result_totext(result)); |
| 3699 | } |
| 3700 | |
| 3701 | return (result); |
| 3702 | } |
| 3703 | #endif |
| 3704 | |
| 3705 | /* |
| 3706 | * Configure 'view' according to 'vconfig', taking defaults from 'config' |
| 3707 | * where values are missing in 'vconfig'. |
| 3708 | * |
| 3709 | * When configuring the default view, 'vconfig' will be NULL and the |
| 3710 | * global defaults in 'config' used exclusively. |
| 3711 | */ |
| 3712 | static isc_result_t |
| 3713 | configure_view(dns_view_t *view, dns_viewlist_t *viewlist, |
| 3714 | cfg_obj_t *config, cfg_obj_t *vconfig, |
| 3715 | named_cachelist_t *cachelist, const cfg_obj_t *bindkeys, |
| 3716 | isc_mem_t *mctx, cfg_aclconfctx_t *actx, |
| 3717 | bool need_hints) |
| 3718 | { |
| 3719 | const cfg_obj_t *maps[4]; |
| 3720 | const cfg_obj_t *cfgmaps[3]; |
| 3721 | const cfg_obj_t *optionmaps[3]; |
| 3722 | const cfg_obj_t *options = NULL; |
| 3723 | const cfg_obj_t *voptions = NULL; |
| 3724 | const cfg_obj_t *forwardtype; |
| 3725 | const cfg_obj_t *forwarders; |
| 3726 | const cfg_obj_t *alternates; |
| 3727 | const cfg_obj_t *zonelist; |
| 3728 | const cfg_obj_t *dlzlist; |
| 3729 | const cfg_obj_t *dlz; |
| 3730 | const cfg_obj_t *dlvobj = NULL; |
| 3731 | unsigned int dlzargc; |
| 3732 | char **dlzargv; |
| 3733 | const cfg_obj_t *dyndb_list, *plugin_list; |
| 3734 | const cfg_obj_t *disabled; |
| 3735 | const cfg_obj_t *obj, *obj2; |
| 3736 | const cfg_listelt_t *element; |
| 3737 | in_port_t port; |
| 3738 | dns_cache_t *cache = NULL; |
| 3739 | isc_result_t result; |
| 3740 | unsigned int cleaning_interval; |
| 3741 | size_t max_cache_size; |
| 3742 | uint32_t max_cache_size_percent = 0; |
| 3743 | size_t max_adb_size; |
| 3744 | uint32_t lame_ttl, fail_ttl; |
| 3745 | uint32_t max_stale_ttl; |
| 3746 | dns_tsig_keyring_t *ring = NULL; |
| 3747 | dns_view_t *pview = NULL; /* Production view */ |
| 3748 | isc_mem_t *cmctx = NULL, *hmctx = NULL; |
| 3749 | dns_dispatch_t *dispatch4 = NULL; |
| 3750 | dns_dispatch_t *dispatch6 = NULL; |
| 3751 | bool reused_cache = false; |
| 3752 | bool shared_cache = false; |
| 3753 | int i = 0, j = 0, k = 0; |
| 3754 | const char *str; |
| 3755 | const char *cachename = NULL; |
| 3756 | dns_order_t *order = NULL; |
| 3757 | uint32_t udpsize; |
| 3758 | uint32_t maxbits; |
| 3759 | unsigned int resopts = 0; |
| 3760 | dns_zone_t *zone = NULL; |
| 3761 | uint32_t max_clients_per_query; |
| 3762 | bool empty_zones_enable; |
| 3763 | const cfg_obj_t *disablelist = NULL; |
| 3764 | isc_stats_t *resstats = NULL; |
| 3765 | dns_stats_t *resquerystats = NULL; |
| 3766 | bool auto_root = false; |
| 3767 | named_cache_t *nsc; |
| 3768 | bool zero_no_soattl; |
| 3769 | dns_acl_t *clients = NULL, *mapped = NULL, *excluded = NULL; |
| 3770 | unsigned int query_timeout, ndisp; |
| 3771 | bool old_rpz_ok = false; |
| 3772 | isc_dscp_t dscp4 = -1, dscp6 = -1; |
| 3773 | dns_dyndbctx_t *dctx = NULL; |
| 3774 | unsigned int resolver_param; |
| 3775 | dns_ntatable_t *ntatable = NULL; |
| 3776 | const char *qminmode = NULL; |
| 3777 | |
| 3778 | REQUIRE(DNS_VIEW_VALID(view)); |
| 3779 | |
| 3780 | if (config != NULL) |
| 3781 | (void)cfg_map_get(config, "options" , &options); |
| 3782 | |
| 3783 | /* |
| 3784 | * maps: view options, options, defaults |
| 3785 | * cfgmaps: view options, config |
| 3786 | * optionmaps: view options, options |
| 3787 | */ |
| 3788 | if (vconfig != NULL) { |
| 3789 | voptions = cfg_tuple_get(vconfig, "options" ); |
| 3790 | maps[i++] = voptions; |
| 3791 | optionmaps[j++] = voptions; |
| 3792 | cfgmaps[k++] = voptions; |
| 3793 | } |
| 3794 | if (options != NULL) { |
| 3795 | maps[i++] = options; |
| 3796 | optionmaps[j++] = options; |
| 3797 | } |
| 3798 | |
| 3799 | maps[i++] = named_g_defaults; |
| 3800 | maps[i] = NULL; |
| 3801 | optionmaps[j] = NULL; |
| 3802 | if (config != NULL) |
| 3803 | cfgmaps[k++] = config; |
| 3804 | cfgmaps[k] = NULL; |
| 3805 | |
| 3806 | /* |
| 3807 | * Set the view's port number for outgoing queries. |
| 3808 | */ |
| 3809 | CHECKM(named_config_getport(config, &port), "port" ); |
| 3810 | dns_view_setdstport(view, port); |
| 3811 | |
| 3812 | /* |
| 3813 | * Make the list of response policy zone names for a view that |
| 3814 | * is used for real lookups and so cares about hints. |
| 3815 | */ |
| 3816 | obj = NULL; |
| 3817 | if (view->rdclass == dns_rdataclass_in && need_hints && |
| 3818 | named_config_get(maps, "response-policy" , &obj) == ISC_R_SUCCESS) { |
| 3819 | CHECK(configure_rpz(view, maps, obj, &old_rpz_ok)); |
| 3820 | } |
| 3821 | |
| 3822 | obj = NULL; |
| 3823 | if (view->rdclass == dns_rdataclass_in && need_hints && |
| 3824 | named_config_get(maps, "catalog-zones" , &obj) == ISC_R_SUCCESS) { |
| 3825 | CHECK(configure_catz(view, config, obj)); |
| 3826 | } |
| 3827 | |
| 3828 | /* |
| 3829 | * Configure the zones. |
| 3830 | */ |
| 3831 | zonelist = NULL; |
| 3832 | if (voptions != NULL) |
| 3833 | (void)cfg_map_get(voptions, "zone" , &zonelist); |
| 3834 | else |
| 3835 | (void)cfg_map_get(config, "zone" , &zonelist); |
| 3836 | |
| 3837 | /* |
| 3838 | * Load zone configuration |
| 3839 | */ |
| 3840 | for (element = cfg_list_first(zonelist); |
| 3841 | element != NULL; |
| 3842 | element = cfg_list_next(element)) |
| 3843 | { |
| 3844 | const cfg_obj_t *zconfig = cfg_listelt_value(element); |
| 3845 | CHECK(configure_zone(config, zconfig, vconfig, mctx, view, |
| 3846 | viewlist, actx, false, old_rpz_ok, |
| 3847 | false)); |
| 3848 | } |
| 3849 | |
| 3850 | /* |
| 3851 | * Check that a master or slave zone was found for each |
| 3852 | * zone named in the response policy statement |
| 3853 | * unless we are using RPZ service interface. |
| 3854 | */ |
| 3855 | if (view->rpzs != NULL && !view->rpzs->p.dnsrps_enabled) { |
| 3856 | dns_rpz_num_t n; |
| 3857 | |
| 3858 | for (n = 0; n < view->rpzs->p.num_zones; ++n) { |
| 3859 | if ((view->rpzs->defined & DNS_RPZ_ZBIT(n)) == 0) { |
| 3860 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 3861 | |
| 3862 | dns_name_format(&view->rpzs->zones[n]->origin, |
| 3863 | namebuf, sizeof(namebuf)); |
| 3864 | isc_log_write(named_g_lctx, |
| 3865 | NAMED_LOGCATEGORY_GENERAL, |
| 3866 | NAMED_LOGMODULE_SERVER, |
| 3867 | DNS_RPZ_ERROR_LEVEL, "rpz '%s'" |
| 3868 | " is not a master or slave zone" , |
| 3869 | namebuf); |
| 3870 | result = ISC_R_NOTFOUND; |
| 3871 | goto cleanup; |
| 3872 | } |
| 3873 | } |
| 3874 | } |
| 3875 | |
| 3876 | /* |
| 3877 | * If we're allowing added zones, then load zone configuration |
| 3878 | * from the newzone file for zones that were added during previous |
| 3879 | * runs. |
| 3880 | */ |
| 3881 | CHECK(configure_newzones(view, config, vconfig, mctx, actx)); |
| 3882 | |
| 3883 | /* |
| 3884 | * Create Dynamically Loadable Zone driver. |
| 3885 | */ |
| 3886 | dlzlist = NULL; |
| 3887 | if (voptions != NULL) |
| 3888 | (void)cfg_map_get(voptions, "dlz" , &dlzlist); |
| 3889 | else |
| 3890 | (void)cfg_map_get(config, "dlz" , &dlzlist); |
| 3891 | |
| 3892 | for (element = cfg_list_first(dlzlist); |
| 3893 | element != NULL; |
| 3894 | element = cfg_list_next(element)) |
| 3895 | { |
| 3896 | dlz = cfg_listelt_value(element); |
| 3897 | |
| 3898 | obj = NULL; |
| 3899 | (void)cfg_map_get(dlz, "database" , &obj); |
| 3900 | if (obj != NULL) { |
| 3901 | dns_dlzdb_t *dlzdb = NULL; |
| 3902 | const cfg_obj_t *name, *search = NULL; |
| 3903 | char *s = isc_mem_strdup(mctx, cfg_obj_asstring(obj)); |
| 3904 | |
| 3905 | if (s == NULL) { |
| 3906 | result = ISC_R_NOMEMORY; |
| 3907 | goto cleanup; |
| 3908 | } |
| 3909 | |
| 3910 | result = isc_commandline_strtoargv(mctx, s, &dlzargc, |
| 3911 | &dlzargv, 0); |
| 3912 | if (result != ISC_R_SUCCESS) { |
| 3913 | isc_mem_free(mctx, s); |
| 3914 | goto cleanup; |
| 3915 | } |
| 3916 | |
| 3917 | name = cfg_map_getname(dlz); |
| 3918 | result = dns_dlzcreate(mctx, cfg_obj_asstring(name), |
| 3919 | dlzargv[0], dlzargc, dlzargv, |
| 3920 | &dlzdb); |
| 3921 | isc_mem_free(mctx, s); |
| 3922 | isc_mem_put(mctx, dlzargv, dlzargc * sizeof(*dlzargv)); |
| 3923 | if (result != ISC_R_SUCCESS) |
| 3924 | goto cleanup; |
| 3925 | |
| 3926 | /* |
| 3927 | * If the DLZ backend supports configuration, |
| 3928 | * and is searchable, then call its configure |
| 3929 | * method now. If not searchable, we'll take |
| 3930 | * care of it when we process the zone statement. |
| 3931 | */ |
| 3932 | (void)cfg_map_get(dlz, "search" , &search); |
| 3933 | if (search == NULL || cfg_obj_asboolean(search)) { |
| 3934 | dlzdb->search = true; |
| 3935 | result = dns_dlzconfigure(view, dlzdb, |
| 3936 | dlzconfigure_callback); |
| 3937 | if (result != ISC_R_SUCCESS) |
| 3938 | goto cleanup; |
| 3939 | ISC_LIST_APPEND(view->dlz_searched, |
| 3940 | dlzdb, link); |
| 3941 | } else { |
| 3942 | dlzdb->search = false; |
| 3943 | ISC_LIST_APPEND(view->dlz_unsearched, |
| 3944 | dlzdb, link); |
| 3945 | } |
| 3946 | |
| 3947 | } |
| 3948 | } |
| 3949 | |
| 3950 | /* |
| 3951 | * Obtain configuration parameters that affect the decision of whether |
| 3952 | * we can reuse/share an existing cache. |
| 3953 | */ |
| 3954 | obj = NULL; |
| 3955 | result = named_config_get(maps, "cleaning-interval" , &obj); |
| 3956 | INSIST(result == ISC_R_SUCCESS); |
| 3957 | cleaning_interval = cfg_obj_asuint32(obj) * 60; |
| 3958 | |
| 3959 | obj = NULL; |
| 3960 | result = named_config_get(maps, "max-cache-size" , &obj); |
| 3961 | INSIST(result == ISC_R_SUCCESS); |
| 3962 | if (cfg_obj_isstring(obj)) { |
| 3963 | str = cfg_obj_asstring(obj); |
| 3964 | INSIST(strcasecmp(str, "unlimited" ) == 0); |
| 3965 | max_cache_size = 0; |
| 3966 | } else if (cfg_obj_ispercentage(obj)) { |
| 3967 | max_cache_size = SIZE_AS_PERCENT; |
| 3968 | max_cache_size_percent = cfg_obj_aspercentage(obj); |
| 3969 | } else { |
| 3970 | isc_resourcevalue_t value; |
| 3971 | value = cfg_obj_asuint64(obj); |
| 3972 | if (value > SIZE_MAX) { |
| 3973 | cfg_obj_log(obj, named_g_lctx, |
| 3974 | ISC_LOG_WARNING, |
| 3975 | "'max-cache-size " |
| 3976 | "%" PRIu64 "' " |
| 3977 | "is too large for this " |
| 3978 | "system; reducing to %lu" , |
| 3979 | value, (unsigned long)SIZE_MAX); |
| 3980 | value = SIZE_MAX; |
| 3981 | } |
| 3982 | max_cache_size = (size_t) value; |
| 3983 | } |
| 3984 | |
| 3985 | if (max_cache_size == SIZE_AS_PERCENT) { |
| 3986 | uint64_t totalphys = isc_meminfo_totalphys(); |
| 3987 | |
| 3988 | max_cache_size = |
| 3989 | (size_t) (totalphys * max_cache_size_percent/100); |
| 3990 | if (totalphys == 0) { |
| 3991 | cfg_obj_log(obj, named_g_lctx, |
| 3992 | ISC_LOG_WARNING, |
| 3993 | "Unable to determine amount of physical " |
| 3994 | "memory, setting 'max-cache-size' to " |
| 3995 | "unlimited" ); |
| 3996 | } else { |
| 3997 | cfg_obj_log(obj, named_g_lctx, |
| 3998 | ISC_LOG_INFO, |
| 3999 | "'max-cache-size %d%%' " |
| 4000 | "- setting to %" PRIu64 "MB " |
| 4001 | "(out of %" PRIu64 "MB)" , |
| 4002 | max_cache_size_percent, |
| 4003 | (uint64_t)(max_cache_size / (1024*1024)), |
| 4004 | totalphys / (1024*1024)); |
| 4005 | } |
| 4006 | } |
| 4007 | |
| 4008 | /* Check-names. */ |
| 4009 | obj = NULL; |
| 4010 | result = named_checknames_get(maps, "response" , &obj); |
| 4011 | INSIST(result == ISC_R_SUCCESS); |
| 4012 | |
| 4013 | str = cfg_obj_asstring(obj); |
| 4014 | if (strcasecmp(str, "fail" ) == 0) { |
| 4015 | resopts |= DNS_RESOLVER_CHECKNAMES | |
| 4016 | DNS_RESOLVER_CHECKNAMESFAIL; |
| 4017 | view->checknames = true; |
| 4018 | } else if (strcasecmp(str, "warn" ) == 0) { |
| 4019 | resopts |= DNS_RESOLVER_CHECKNAMES; |
| 4020 | view->checknames = false; |
| 4021 | } else if (strcasecmp(str, "ignore" ) == 0) { |
| 4022 | view->checknames = false; |
| 4023 | } else { |
| 4024 | INSIST(0); |
| 4025 | ISC_UNREACHABLE(); |
| 4026 | } |
| 4027 | |
| 4028 | obj = NULL; |
| 4029 | result = named_config_get(maps, "zero-no-soa-ttl-cache" , &obj); |
| 4030 | INSIST(result == ISC_R_SUCCESS); |
| 4031 | zero_no_soattl = cfg_obj_asboolean(obj); |
| 4032 | |
| 4033 | obj = NULL; |
| 4034 | result = named_config_get(maps, "dns64" , &obj); |
| 4035 | if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind" ) && |
| 4036 | strcmp(view->name, "_meta" )) { |
| 4037 | isc_netaddr_t na, suffix, *sp; |
| 4038 | unsigned int prefixlen; |
| 4039 | const char *server, *contact; |
| 4040 | const cfg_obj_t *myobj; |
| 4041 | |
| 4042 | myobj = NULL; |
| 4043 | result = named_config_get(maps, "dns64-server" , &myobj); |
| 4044 | if (result == ISC_R_SUCCESS) |
| 4045 | server = cfg_obj_asstring(myobj); |
| 4046 | else |
| 4047 | server = NULL; |
| 4048 | |
| 4049 | myobj = NULL; |
| 4050 | result = named_config_get(maps, "dns64-contact" , &myobj); |
| 4051 | if (result == ISC_R_SUCCESS) |
| 4052 | contact = cfg_obj_asstring(myobj); |
| 4053 | else |
| 4054 | contact = NULL; |
| 4055 | |
| 4056 | for (element = cfg_list_first(obj); |
| 4057 | element != NULL; |
| 4058 | element = cfg_list_next(element)) |
| 4059 | { |
| 4060 | const cfg_obj_t *map = cfg_listelt_value(element); |
| 4061 | dns_dns64_t *dns64 = NULL; |
| 4062 | unsigned int dns64options = 0; |
| 4063 | |
| 4064 | cfg_obj_asnetprefix(cfg_map_getname(map), &na, |
| 4065 | &prefixlen); |
| 4066 | |
| 4067 | obj = NULL; |
| 4068 | (void)cfg_map_get(map, "suffix" , &obj); |
| 4069 | if (obj != NULL) { |
| 4070 | sp = &suffix; |
| 4071 | isc_netaddr_fromsockaddr(sp, |
| 4072 | cfg_obj_assockaddr(obj)); |
| 4073 | } else |
| 4074 | sp = NULL; |
| 4075 | |
| 4076 | clients = mapped = excluded = NULL; |
| 4077 | obj = NULL; |
| 4078 | (void)cfg_map_get(map, "clients" , &obj); |
| 4079 | if (obj != NULL) { |
| 4080 | result = cfg_acl_fromconfig(obj, config, |
| 4081 | named_g_lctx, actx, |
| 4082 | mctx, 0, &clients); |
| 4083 | if (result != ISC_R_SUCCESS) |
| 4084 | goto cleanup; |
| 4085 | } |
| 4086 | obj = NULL; |
| 4087 | (void)cfg_map_get(map, "mapped" , &obj); |
| 4088 | if (obj != NULL) { |
| 4089 | result = cfg_acl_fromconfig(obj, config, |
| 4090 | named_g_lctx, actx, |
| 4091 | mctx, 0, &mapped); |
| 4092 | if (result != ISC_R_SUCCESS) |
| 4093 | goto cleanup; |
| 4094 | } |
| 4095 | obj = NULL; |
| 4096 | (void)cfg_map_get(map, "exclude" , &obj); |
| 4097 | if (obj != NULL) { |
| 4098 | result = cfg_acl_fromconfig(obj, config, |
| 4099 | named_g_lctx, actx, |
| 4100 | mctx, 0, &excluded); |
| 4101 | if (result != ISC_R_SUCCESS) |
| 4102 | goto cleanup; |
| 4103 | } else { |
| 4104 | if (named_g_mapped == NULL) { |
| 4105 | result = create_mapped_acl(); |
| 4106 | if (result != ISC_R_SUCCESS) |
| 4107 | goto cleanup; |
| 4108 | } |
| 4109 | dns_acl_attach(named_g_mapped, &excluded); |
| 4110 | } |
| 4111 | |
| 4112 | obj = NULL; |
| 4113 | (void)cfg_map_get(map, "recursive-only" , &obj); |
| 4114 | if (obj != NULL && cfg_obj_asboolean(obj)) |
| 4115 | dns64options |= DNS_DNS64_RECURSIVE_ONLY; |
| 4116 | |
| 4117 | obj = NULL; |
| 4118 | (void)cfg_map_get(map, "break-dnssec" , &obj); |
| 4119 | if (obj != NULL && cfg_obj_asboolean(obj)) |
| 4120 | dns64options |= DNS_DNS64_BREAK_DNSSEC; |
| 4121 | |
| 4122 | result = dns_dns64_create(mctx, &na, prefixlen, sp, |
| 4123 | clients, mapped, excluded, |
| 4124 | dns64options, &dns64); |
| 4125 | if (result != ISC_R_SUCCESS) |
| 4126 | goto cleanup; |
| 4127 | dns_dns64_append(&view->dns64, dns64); |
| 4128 | view->dns64cnt++; |
| 4129 | result = dns64_reverse(view, mctx, &na, prefixlen, |
| 4130 | server, contact); |
| 4131 | if (result != ISC_R_SUCCESS) |
| 4132 | goto cleanup; |
| 4133 | if (clients != NULL) |
| 4134 | dns_acl_detach(&clients); |
| 4135 | if (mapped != NULL) |
| 4136 | dns_acl_detach(&mapped); |
| 4137 | if (excluded != NULL) |
| 4138 | dns_acl_detach(&excluded); |
| 4139 | } |
| 4140 | } |
| 4141 | |
| 4142 | obj = NULL; |
| 4143 | result = named_config_get(maps, "dnssec-accept-expired" , &obj); |
| 4144 | INSIST(result == ISC_R_SUCCESS); |
| 4145 | view->acceptexpired = cfg_obj_asboolean(obj); |
| 4146 | |
| 4147 | obj = NULL; |
| 4148 | result = named_config_get(maps, "dnssec-enable" , &obj); |
| 4149 | INSIST(result == ISC_R_SUCCESS); |
| 4150 | view->enablednssec = cfg_obj_asboolean(obj); |
| 4151 | |
| 4152 | obj = NULL; |
| 4153 | /* 'optionmaps', not 'maps': don't check named_g_defaults yet */ |
| 4154 | (void)named_config_get(optionmaps, "dnssec-validation" , &obj); |
| 4155 | if (obj == NULL) { |
| 4156 | /* |
| 4157 | * If dnssec-enable is yes, then we default to |
| 4158 | * VALIDATION_DEFAULT as set in config.c. Otherwise |
| 4159 | * we default to "no". |
| 4160 | */ |
| 4161 | if (view->enablednssec) { |
| 4162 | (void)cfg_map_get(named_g_defaults, |
| 4163 | "dnssec-validation" , &obj); |
| 4164 | INSIST(obj != NULL); |
| 4165 | } else { |
| 4166 | view->enablevalidation = false; |
| 4167 | } |
| 4168 | } |
| 4169 | if (obj != NULL) { |
| 4170 | if (cfg_obj_isboolean(obj)) { |
| 4171 | view->enablevalidation = cfg_obj_asboolean(obj); |
| 4172 | } else { |
| 4173 | /* |
| 4174 | * If dnssec-validation is set but not boolean, |
| 4175 | * then it must be "auto" |
| 4176 | */ |
| 4177 | view->enablevalidation = true; |
| 4178 | auto_root = true; |
| 4179 | } |
| 4180 | } |
| 4181 | |
| 4182 | obj = NULL; |
| 4183 | result = named_config_get(maps, "max-cache-ttl" , &obj); |
| 4184 | INSIST(result == ISC_R_SUCCESS); |
| 4185 | view->maxcachettl = cfg_obj_asuint32(obj); |
| 4186 | |
| 4187 | obj = NULL; |
| 4188 | result = named_config_get(maps, "max-ncache-ttl" , &obj); |
| 4189 | INSIST(result == ISC_R_SUCCESS); |
| 4190 | view->maxncachettl = cfg_obj_asuint32(obj); |
| 4191 | |
| 4192 | obj = NULL; |
| 4193 | result = named_config_get(maps, "min-cache-ttl" , &obj); |
| 4194 | INSIST(result == ISC_R_SUCCESS); |
| 4195 | view->mincachettl = cfg_obj_asuint32(obj); |
| 4196 | |
| 4197 | obj = NULL; |
| 4198 | result = named_config_get(maps, "min-ncache-ttl" , &obj); |
| 4199 | INSIST(result == ISC_R_SUCCESS); |
| 4200 | view->minncachettl = cfg_obj_asuint32(obj); |
| 4201 | |
| 4202 | obj = NULL; |
| 4203 | result = named_config_get(maps, "synth-from-dnssec" , &obj); |
| 4204 | INSIST(result == ISC_R_SUCCESS); |
| 4205 | view->synthfromdnssec = cfg_obj_asboolean(obj); |
| 4206 | |
| 4207 | obj = NULL; |
| 4208 | result = named_config_get(maps, "max-stale-ttl" , &obj); |
| 4209 | INSIST(result == ISC_R_SUCCESS); |
| 4210 | max_stale_ttl = ISC_MAX(cfg_obj_asuint32(obj), 1); |
| 4211 | |
| 4212 | obj = NULL; |
| 4213 | result = named_config_get(maps, "stale-answer-enable" , &obj); |
| 4214 | INSIST(result == ISC_R_SUCCESS); |
| 4215 | view->staleanswersenable = cfg_obj_asboolean(obj); |
| 4216 | |
| 4217 | result = dns_viewlist_find(&named_g_server->viewlist, view->name, |
| 4218 | view->rdclass, &pview); |
| 4219 | if (result == ISC_R_SUCCESS) { |
| 4220 | view->staleanswersok = pview->staleanswersok; |
| 4221 | dns_view_detach(&pview); |
| 4222 | } else |
| 4223 | view->staleanswersok = dns_stale_answer_conf; |
| 4224 | |
| 4225 | /* |
| 4226 | * Configure the view's cache. |
| 4227 | * |
| 4228 | * First, check to see if there are any attach-cache options. If yes, |
| 4229 | * attempt to lookup an existing cache at attach it to the view. If |
| 4230 | * there is not one, then try to reuse an existing cache if possible; |
| 4231 | * otherwise create a new cache. |
| 4232 | * |
| 4233 | * Note that the ADB is not preserved or shared in either case. |
| 4234 | * |
| 4235 | * When a matching view is found, the associated statistics are also |
| 4236 | * retrieved and reused. |
| 4237 | * |
| 4238 | * XXX Determining when it is safe to reuse or share a cache is tricky. |
| 4239 | * When the view's configuration changes, the cached data may become |
| 4240 | * invalid because it reflects our old view of the world. We check |
| 4241 | * some of the configuration parameters that could invalidate the cache |
| 4242 | * or otherwise make it unsharable, but there are other configuration |
| 4243 | * options that should be checked. For example, if a view uses a |
| 4244 | * forwarder, changes in the forwarder configuration may invalidate |
| 4245 | * the cache. At the moment, it's the administrator's responsibility to |
| 4246 | * ensure these configuration options don't invalidate reusing/sharing. |
| 4247 | */ |
| 4248 | obj = NULL; |
| 4249 | result = named_config_get(maps, "attach-cache" , &obj); |
| 4250 | if (result == ISC_R_SUCCESS) |
| 4251 | cachename = cfg_obj_asstring(obj); |
| 4252 | else |
| 4253 | cachename = view->name; |
| 4254 | cache = NULL; |
| 4255 | nsc = cachelist_find(cachelist, cachename, view->rdclass); |
| 4256 | if (nsc != NULL) { |
| 4257 | if (!cache_sharable(nsc->primaryview, view, zero_no_soattl, |
| 4258 | cleaning_interval, max_cache_size, |
| 4259 | max_stale_ttl)) |
| 4260 | { |
| 4261 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 4262 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 4263 | "views %s and %s can't share the cache " |
| 4264 | "due to configuration parameter mismatch" , |
| 4265 | nsc->primaryview->name, view->name); |
| 4266 | result = ISC_R_FAILURE; |
| 4267 | goto cleanup; |
| 4268 | } |
| 4269 | dns_cache_attach(nsc->cache, &cache); |
| 4270 | shared_cache = true; |
| 4271 | } else { |
| 4272 | if (strcmp(cachename, view->name) == 0) { |
| 4273 | result = dns_viewlist_find(&named_g_server->viewlist, |
| 4274 | cachename, view->rdclass, |
| 4275 | &pview); |
| 4276 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) |
| 4277 | goto cleanup; |
| 4278 | if (pview != NULL) { |
| 4279 | if (!cache_reusable(pview, view, |
| 4280 | zero_no_soattl)) { |
| 4281 | isc_log_write(named_g_lctx, |
| 4282 | NAMED_LOGCATEGORY_GENERAL, |
| 4283 | NAMED_LOGMODULE_SERVER, |
| 4284 | ISC_LOG_DEBUG(1), |
| 4285 | "cache cannot be reused " |
| 4286 | "for view %s due to " |
| 4287 | "configuration parameter " |
| 4288 | "mismatch" , view->name); |
| 4289 | } else { |
| 4290 | INSIST(pview->cache != NULL); |
| 4291 | isc_log_write(named_g_lctx, |
| 4292 | NAMED_LOGCATEGORY_GENERAL, |
| 4293 | NAMED_LOGMODULE_SERVER, |
| 4294 | ISC_LOG_DEBUG(3), |
| 4295 | "reusing existing cache" ); |
| 4296 | reused_cache = true; |
| 4297 | dns_cache_attach(pview->cache, &cache); |
| 4298 | } |
| 4299 | dns_view_getresstats(pview, &resstats); |
| 4300 | dns_view_getresquerystats(pview, |
| 4301 | &resquerystats); |
| 4302 | dns_view_detach(&pview); |
| 4303 | } |
| 4304 | } |
| 4305 | if (cache == NULL) { |
| 4306 | /* |
| 4307 | * Create a cache with the desired name. This normally |
| 4308 | * equals the view name, but may also be a forward |
| 4309 | * reference to a view that share the cache with this |
| 4310 | * view but is not yet configured. If it is not the |
| 4311 | * view name but not a forward reference either, then it |
| 4312 | * is simply a named cache that is not shared. |
| 4313 | * |
| 4314 | * We use two separate memory contexts for the |
| 4315 | * cache, for the main cache memory and the heap |
| 4316 | * memory. |
| 4317 | */ |
| 4318 | CHECK(isc_mem_create(0, 0, &cmctx)); |
| 4319 | isc_mem_setname(cmctx, "cache" , NULL); |
| 4320 | CHECK(isc_mem_create(0, 0, &hmctx)); |
| 4321 | isc_mem_setname(hmctx, "cache_heap" , NULL); |
| 4322 | CHECK(dns_cache_create(cmctx, hmctx, named_g_taskmgr, |
| 4323 | named_g_timermgr, view->rdclass, |
| 4324 | cachename, "rbt" , 0, NULL, |
| 4325 | &cache)); |
| 4326 | isc_mem_detach(&cmctx); |
| 4327 | isc_mem_detach(&hmctx); |
| 4328 | } |
| 4329 | nsc = isc_mem_get(mctx, sizeof(*nsc)); |
| 4330 | if (nsc == NULL) { |
| 4331 | result = ISC_R_NOMEMORY; |
| 4332 | goto cleanup; |
| 4333 | } |
| 4334 | nsc->cache = NULL; |
| 4335 | dns_cache_attach(cache, &nsc->cache); |
| 4336 | nsc->primaryview = view; |
| 4337 | nsc->needflush = false; |
| 4338 | nsc->adbsizeadjusted = false; |
| 4339 | nsc->rdclass = view->rdclass; |
| 4340 | ISC_LINK_INIT(nsc, link); |
| 4341 | ISC_LIST_APPEND(*cachelist, nsc, link); |
| 4342 | } |
| 4343 | dns_view_setcache(view, cache, shared_cache); |
| 4344 | |
| 4345 | /* |
| 4346 | * cache-file cannot be inherited if views are present, but this |
| 4347 | * should be caught by the configuration checking stage. |
| 4348 | */ |
| 4349 | obj = NULL; |
| 4350 | result = named_config_get(maps, "cache-file" , &obj); |
| 4351 | if (result == ISC_R_SUCCESS && strcmp(view->name, "_bind" ) != 0) { |
| 4352 | CHECK(dns_cache_setfilename(cache, cfg_obj_asstring(obj))); |
| 4353 | if (!reused_cache && !shared_cache) |
| 4354 | CHECK(dns_cache_load(cache)); |
| 4355 | } |
| 4356 | |
| 4357 | dns_cache_setcleaninginterval(cache, cleaning_interval); |
| 4358 | dns_cache_setcachesize(cache, max_cache_size); |
| 4359 | dns_cache_setservestalettl(cache, max_stale_ttl); |
| 4360 | |
| 4361 | dns_cache_detach(&cache); |
| 4362 | |
| 4363 | obj = NULL; |
| 4364 | result = named_config_get(maps, "stale-answer-ttl" , &obj); |
| 4365 | INSIST(result == ISC_R_SUCCESS); |
| 4366 | view->staleanswerttl = ISC_MAX(cfg_obj_asuint32(obj), 1); |
| 4367 | |
| 4368 | /* |
| 4369 | * Resolver. |
| 4370 | * |
| 4371 | * XXXRTH Hardwired number of tasks. |
| 4372 | */ |
| 4373 | CHECK(get_view_querysource_dispatch(maps, AF_INET, &dispatch4, &dscp4, |
| 4374 | (ISC_LIST_PREV(view, link) == NULL))); |
| 4375 | CHECK(get_view_querysource_dispatch(maps, AF_INET6, &dispatch6, &dscp6, |
| 4376 | (ISC_LIST_PREV(view, link) == NULL))); |
| 4377 | if (dispatch4 == NULL && dispatch6 == NULL) { |
| 4378 | UNEXPECTED_ERROR(__FILE__, __LINE__, |
| 4379 | "unable to obtain neither an IPv4 nor" |
| 4380 | " an IPv6 dispatch" ); |
| 4381 | result = ISC_R_UNEXPECTED; |
| 4382 | goto cleanup; |
| 4383 | } |
| 4384 | |
| 4385 | if (resstats == NULL) { |
| 4386 | CHECK(isc_stats_create(mctx, &resstats, |
| 4387 | dns_resstatscounter_max)); |
| 4388 | } |
| 4389 | dns_view_setresstats(view, resstats); |
| 4390 | if (resquerystats == NULL) |
| 4391 | CHECK(dns_rdatatypestats_create(mctx, &resquerystats)); |
| 4392 | dns_view_setresquerystats(view, resquerystats); |
| 4393 | |
| 4394 | ndisp = 4 * ISC_MIN(named_g_udpdisp, MAX_UDP_DISPATCH); |
| 4395 | CHECK(dns_view_createresolver(view, named_g_taskmgr, RESOLVER_NTASKS, |
| 4396 | ndisp, named_g_socketmgr, |
| 4397 | named_g_timermgr, resopts, |
| 4398 | named_g_dispatchmgr, |
| 4399 | dispatch4, dispatch6)); |
| 4400 | |
| 4401 | if (dscp4 == -1) |
| 4402 | dscp4 = named_g_dscp; |
| 4403 | if (dscp6 == -1) |
| 4404 | dscp6 = named_g_dscp; |
| 4405 | if (dscp4 != -1) |
| 4406 | dns_resolver_setquerydscp4(view->resolver, dscp4); |
| 4407 | if (dscp6 != -1) |
| 4408 | dns_resolver_setquerydscp6(view->resolver, dscp6); |
| 4409 | |
| 4410 | /* |
| 4411 | * Set the ADB cache size to 1/8th of the max-cache-size or |
| 4412 | * MAX_ADB_SIZE_FOR_CACHESHARE when the cache is shared. |
| 4413 | */ |
| 4414 | max_adb_size = 0; |
| 4415 | if (max_cache_size != 0U) { |
| 4416 | max_adb_size = max_cache_size / 8; |
| 4417 | if (max_adb_size == 0U) |
| 4418 | max_adb_size = 1; /* Force minimum. */ |
| 4419 | if (view != nsc->primaryview && |
| 4420 | max_adb_size > MAX_ADB_SIZE_FOR_CACHESHARE) { |
| 4421 | max_adb_size = MAX_ADB_SIZE_FOR_CACHESHARE; |
| 4422 | if (!nsc->adbsizeadjusted) { |
| 4423 | dns_adb_setadbsize(nsc->primaryview->adb, |
| 4424 | MAX_ADB_SIZE_FOR_CACHESHARE); |
| 4425 | nsc->adbsizeadjusted = true; |
| 4426 | } |
| 4427 | } |
| 4428 | } |
| 4429 | dns_adb_setadbsize(view->adb, max_adb_size); |
| 4430 | |
| 4431 | /* |
| 4432 | * Set up ADB quotas |
| 4433 | */ |
| 4434 | { |
| 4435 | uint32_t fps, freq; |
| 4436 | double low, high, discount; |
| 4437 | |
| 4438 | obj = NULL; |
| 4439 | result = named_config_get(maps, "fetches-per-server" , &obj); |
| 4440 | INSIST(result == ISC_R_SUCCESS); |
| 4441 | obj2 = cfg_tuple_get(obj, "fetches" ); |
| 4442 | fps = cfg_obj_asuint32(obj2); |
| 4443 | obj2 = cfg_tuple_get(obj, "response" ); |
| 4444 | if (!cfg_obj_isvoid(obj2)) { |
| 4445 | const char *resp = cfg_obj_asstring(obj2); |
| 4446 | isc_result_t r = DNS_R_SERVFAIL; |
| 4447 | |
| 4448 | if (strcasecmp(resp, "drop" ) == 0) { |
| 4449 | r = DNS_R_DROP; |
| 4450 | } else if (strcasecmp(resp, "fail" ) == 0) { |
| 4451 | r = DNS_R_SERVFAIL; |
| 4452 | } else { |
| 4453 | INSIST(0); |
| 4454 | ISC_UNREACHABLE(); |
| 4455 | } |
| 4456 | |
| 4457 | dns_resolver_setquotaresponse(view->resolver, |
| 4458 | dns_quotatype_server, r); |
| 4459 | } |
| 4460 | |
| 4461 | obj = NULL; |
| 4462 | result = named_config_get(maps, "fetch-quota-params" , &obj); |
| 4463 | INSIST(result == ISC_R_SUCCESS); |
| 4464 | |
| 4465 | obj2 = cfg_tuple_get(obj, "frequency" ); |
| 4466 | freq = cfg_obj_asuint32(obj2); |
| 4467 | |
| 4468 | obj2 = cfg_tuple_get(obj, "low" ); |
| 4469 | low = (double) cfg_obj_asfixedpoint(obj2) / 100.0; |
| 4470 | |
| 4471 | obj2 = cfg_tuple_get(obj, "high" ); |
| 4472 | high = (double) cfg_obj_asfixedpoint(obj2) / 100.0; |
| 4473 | |
| 4474 | obj2 = cfg_tuple_get(obj, "discount" ); |
| 4475 | discount = (double) cfg_obj_asfixedpoint(obj2) / 100.0; |
| 4476 | |
| 4477 | dns_adb_setquota(view->adb, fps, freq, low, high, discount); |
| 4478 | } |
| 4479 | |
| 4480 | /* |
| 4481 | * Set resolver's lame-ttl. |
| 4482 | */ |
| 4483 | obj = NULL; |
| 4484 | result = named_config_get(maps, "lame-ttl" , &obj); |
| 4485 | INSIST(result == ISC_R_SUCCESS); |
| 4486 | lame_ttl = cfg_obj_asuint32(obj); |
| 4487 | if (lame_ttl > 1800) |
| 4488 | lame_ttl = 1800; |
| 4489 | dns_resolver_setlamettl(view->resolver, lame_ttl); |
| 4490 | |
| 4491 | /* |
| 4492 | * Set the resolver's query timeout. |
| 4493 | */ |
| 4494 | obj = NULL; |
| 4495 | result = named_config_get(maps, "resolver-query-timeout" , &obj); |
| 4496 | INSIST(result == ISC_R_SUCCESS); |
| 4497 | query_timeout = cfg_obj_asuint32(obj); |
| 4498 | dns_resolver_settimeout(view->resolver, query_timeout); |
| 4499 | |
| 4500 | /* Specify whether to use 0-TTL for negative response for SOA query */ |
| 4501 | dns_resolver_setzeronosoattl(view->resolver, zero_no_soattl); |
| 4502 | |
| 4503 | /* |
| 4504 | * Set the resolver's EDNS UDP size. |
| 4505 | */ |
| 4506 | obj = NULL; |
| 4507 | result = named_config_get(maps, "edns-udp-size" , &obj); |
| 4508 | INSIST(result == ISC_R_SUCCESS); |
| 4509 | udpsize = cfg_obj_asuint32(obj); |
| 4510 | if (udpsize < 512) |
| 4511 | udpsize = 512; |
| 4512 | if (udpsize > 4096) |
| 4513 | udpsize = 4096; |
| 4514 | dns_resolver_setudpsize(view->resolver, (uint16_t)udpsize); |
| 4515 | |
| 4516 | /* |
| 4517 | * Set the maximum UDP response size. |
| 4518 | */ |
| 4519 | obj = NULL; |
| 4520 | result = named_config_get(maps, "max-udp-size" , &obj); |
| 4521 | INSIST(result == ISC_R_SUCCESS); |
| 4522 | udpsize = cfg_obj_asuint32(obj); |
| 4523 | if (udpsize < 512) |
| 4524 | udpsize = 512; |
| 4525 | if (udpsize > 4096) |
| 4526 | udpsize = 4096; |
| 4527 | view->maxudp = udpsize; |
| 4528 | |
| 4529 | /* |
| 4530 | * Set the maximum UDP when a COOKIE is not provided. |
| 4531 | */ |
| 4532 | obj = NULL; |
| 4533 | result = named_config_get(maps, "nocookie-udp-size" , &obj); |
| 4534 | INSIST(result == ISC_R_SUCCESS); |
| 4535 | udpsize = cfg_obj_asuint32(obj); |
| 4536 | if (udpsize < 128) |
| 4537 | udpsize = 128; |
| 4538 | if (udpsize > view->maxudp) |
| 4539 | udpsize = view->maxudp; |
| 4540 | view->nocookieudp = udpsize; |
| 4541 | |
| 4542 | /* |
| 4543 | * Set the maximum rsa exponent bits. |
| 4544 | */ |
| 4545 | obj = NULL; |
| 4546 | result = named_config_get(maps, "max-rsa-exponent-size" , &obj); |
| 4547 | INSIST(result == ISC_R_SUCCESS); |
| 4548 | maxbits = cfg_obj_asuint32(obj); |
| 4549 | if (maxbits != 0 && maxbits < 35) |
| 4550 | maxbits = 35; |
| 4551 | if (maxbits > 4096) |
| 4552 | maxbits = 4096; |
| 4553 | view->maxbits = maxbits; |
| 4554 | |
| 4555 | /* |
| 4556 | * Set resolver retry parameters. |
| 4557 | */ |
| 4558 | obj = NULL; |
| 4559 | CHECK(named_config_get(maps, "resolver-retry-interval" , &obj)); |
| 4560 | resolver_param = cfg_obj_asuint32(obj); |
| 4561 | if (resolver_param > 0) |
| 4562 | dns_resolver_setretryinterval(view->resolver, resolver_param); |
| 4563 | |
| 4564 | obj = NULL; |
| 4565 | CHECK(named_config_get(maps, "resolver-nonbackoff-tries" , &obj)); |
| 4566 | resolver_param = cfg_obj_asuint32(obj); |
| 4567 | if (resolver_param > 0) |
| 4568 | dns_resolver_setnonbackofftries(view->resolver, resolver_param); |
| 4569 | |
| 4570 | /* |
| 4571 | * Set supported DNSSEC algorithms. |
| 4572 | */ |
| 4573 | dns_resolver_reset_algorithms(view->resolver); |
| 4574 | disabled = NULL; |
| 4575 | (void)named_config_get(maps, "disable-algorithms" , &disabled); |
| 4576 | if (disabled != NULL) { |
| 4577 | for (element = cfg_list_first(disabled); |
| 4578 | element != NULL; |
| 4579 | element = cfg_list_next(element)) |
| 4580 | CHECK(disable_algorithms(cfg_listelt_value(element), |
| 4581 | view->resolver)); |
| 4582 | } |
| 4583 | |
| 4584 | /* |
| 4585 | * Set supported DS/DLV digest types. |
| 4586 | */ |
| 4587 | dns_resolver_reset_ds_digests(view->resolver); |
| 4588 | disabled = NULL; |
| 4589 | (void)named_config_get(maps, "disable-ds-digests" , &disabled); |
| 4590 | if (disabled != NULL) { |
| 4591 | for (element = cfg_list_first(disabled); |
| 4592 | element != NULL; |
| 4593 | element = cfg_list_next(element)) |
| 4594 | CHECK(disable_ds_digests(cfg_listelt_value(element), |
| 4595 | view->resolver)); |
| 4596 | } |
| 4597 | |
| 4598 | /* |
| 4599 | * A global or view "forwarders" option, if present, |
| 4600 | * creates an entry for "." in the forwarding table. |
| 4601 | */ |
| 4602 | forwardtype = NULL; |
| 4603 | forwarders = NULL; |
| 4604 | (void)named_config_get(maps, "forward" , &forwardtype); |
| 4605 | (void)named_config_get(maps, "forwarders" , &forwarders); |
| 4606 | if (forwarders != NULL) |
| 4607 | CHECK(configure_forward(config, view, dns_rootname, |
| 4608 | forwarders, forwardtype)); |
| 4609 | |
| 4610 | /* |
| 4611 | * Dual Stack Servers. |
| 4612 | */ |
| 4613 | alternates = NULL; |
| 4614 | (void)named_config_get(maps, "dual-stack-servers" , &alternates); |
| 4615 | if (alternates != NULL) |
| 4616 | CHECK(configure_alternates(config, view, alternates)); |
| 4617 | |
| 4618 | /* |
| 4619 | * We have default hints for class IN if we need them. |
| 4620 | */ |
| 4621 | if (view->rdclass == dns_rdataclass_in && view->hints == NULL) |
| 4622 | dns_view_sethints(view, named_g_server->in_roothints); |
| 4623 | |
| 4624 | /* |
| 4625 | * If we still have no hints, this is a non-IN view with no |
| 4626 | * "hints zone" configured. Issue a warning, except if this |
| 4627 | * is a root server. Root servers never need to consult |
| 4628 | * their hints, so it's no point requiring users to configure |
| 4629 | * them. |
| 4630 | */ |
| 4631 | if (view->hints == NULL) { |
| 4632 | dns_zone_t *rootzone = NULL; |
| 4633 | (void)dns_view_findzone(view, dns_rootname, &rootzone); |
| 4634 | if (rootzone != NULL) { |
| 4635 | dns_zone_detach(&rootzone); |
| 4636 | need_hints = false; |
| 4637 | } |
| 4638 | if (need_hints) |
| 4639 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 4640 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 4641 | "no root hints for view '%s'" , |
| 4642 | view->name); |
| 4643 | } |
| 4644 | |
| 4645 | /* |
| 4646 | * Configure the view's TSIG keys. |
| 4647 | */ |
| 4648 | CHECK(named_tsigkeyring_fromconfig(config, vconfig, |
| 4649 | view->mctx, &ring)); |
| 4650 | if (named_g_server->sessionkey != NULL) { |
| 4651 | CHECK(dns_tsigkeyring_add(ring, |
| 4652 | named_g_server->session_keyname, |
| 4653 | named_g_server->sessionkey)); |
| 4654 | } |
| 4655 | dns_view_setkeyring(view, ring); |
| 4656 | dns_tsigkeyring_detach(&ring); |
| 4657 | |
| 4658 | /* |
| 4659 | * See if we can re-use a dynamic key ring. |
| 4660 | */ |
| 4661 | result = dns_viewlist_find(&named_g_server->viewlist, view->name, |
| 4662 | view->rdclass, &pview); |
| 4663 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) |
| 4664 | goto cleanup; |
| 4665 | if (pview != NULL) { |
| 4666 | dns_view_getdynamickeyring(pview, &ring); |
| 4667 | if (ring != NULL) |
| 4668 | dns_view_setdynamickeyring(view, ring); |
| 4669 | dns_tsigkeyring_detach(&ring); |
| 4670 | dns_view_detach(&pview); |
| 4671 | } else |
| 4672 | dns_view_restorekeyring(view); |
| 4673 | |
| 4674 | /* |
| 4675 | * Configure the view's peer list. |
| 4676 | */ |
| 4677 | { |
| 4678 | const cfg_obj_t *peers = NULL; |
| 4679 | dns_peerlist_t *newpeers = NULL; |
| 4680 | |
| 4681 | (void)named_config_get(cfgmaps, "server" , &peers); |
| 4682 | CHECK(dns_peerlist_new(mctx, &newpeers)); |
| 4683 | for (element = cfg_list_first(peers); |
| 4684 | element != NULL; |
| 4685 | element = cfg_list_next(element)) |
| 4686 | { |
| 4687 | const cfg_obj_t *cpeer = cfg_listelt_value(element); |
| 4688 | dns_peer_t *peer; |
| 4689 | |
| 4690 | CHECK(configure_peer(cpeer, mctx, &peer)); |
| 4691 | dns_peerlist_addpeer(newpeers, peer); |
| 4692 | dns_peer_detach(&peer); |
| 4693 | } |
| 4694 | dns_peerlist_detach(&view->peers); |
| 4695 | view->peers = newpeers; /* Transfer ownership. */ |
| 4696 | } |
| 4697 | |
| 4698 | /* |
| 4699 | * Configure the views rrset-order. |
| 4700 | */ |
| 4701 | { |
| 4702 | const cfg_obj_t *rrsetorder = NULL; |
| 4703 | |
| 4704 | (void)named_config_get(maps, "rrset-order" , &rrsetorder); |
| 4705 | CHECK(dns_order_create(mctx, &order)); |
| 4706 | for (element = cfg_list_first(rrsetorder); |
| 4707 | element != NULL; |
| 4708 | element = cfg_list_next(element)) |
| 4709 | { |
| 4710 | const cfg_obj_t *ent = cfg_listelt_value(element); |
| 4711 | |
| 4712 | CHECK(configure_order(order, ent)); |
| 4713 | } |
| 4714 | if (view->order != NULL) |
| 4715 | dns_order_detach(&view->order); |
| 4716 | dns_order_attach(order, &view->order); |
| 4717 | dns_order_detach(&order); |
| 4718 | } |
| 4719 | /* |
| 4720 | * Copy the aclenv object. |
| 4721 | */ |
| 4722 | dns_aclenv_copy(&view->aclenv, |
| 4723 | ns_interfacemgr_getaclenv(named_g_server->interfacemgr)); |
| 4724 | |
| 4725 | /* |
| 4726 | * Configure the "match-clients" and "match-destinations" ACL. |
| 4727 | * (These are only meaningful at the view level, but 'config' |
| 4728 | * must be passed so that named ACLs defined at the global level |
| 4729 | * can be retrieved.) |
| 4730 | */ |
| 4731 | CHECK(configure_view_acl(vconfig, config, NULL, "match-clients" , |
| 4732 | NULL, actx, named_g_mctx, |
| 4733 | &view->matchclients)); |
| 4734 | CHECK(configure_view_acl(vconfig, config, NULL, "match-destinations" , |
| 4735 | NULL, actx, named_g_mctx, |
| 4736 | &view->matchdestinations)); |
| 4737 | |
| 4738 | /* |
| 4739 | * Configure the "match-recursive-only" option. |
| 4740 | */ |
| 4741 | obj = NULL; |
| 4742 | (void)named_config_get(maps, "match-recursive-only" , &obj); |
| 4743 | if (obj != NULL && cfg_obj_asboolean(obj)) |
| 4744 | view->matchrecursiveonly = true; |
| 4745 | else |
| 4746 | view->matchrecursiveonly = false; |
| 4747 | |
| 4748 | /* |
| 4749 | * Configure other configurable data. |
| 4750 | */ |
| 4751 | obj = NULL; |
| 4752 | result = named_config_get(maps, "recursion" , &obj); |
| 4753 | INSIST(result == ISC_R_SUCCESS); |
| 4754 | view->recursion = cfg_obj_asboolean(obj); |
| 4755 | |
| 4756 | obj = NULL; |
| 4757 | result = named_config_get(maps, "qname-minimization" , &obj); |
| 4758 | INSIST(result == ISC_R_SUCCESS); |
| 4759 | qminmode = cfg_obj_asstring(obj); |
| 4760 | INSIST(qminmode != NULL); |
| 4761 | if (!strcmp(qminmode, "strict" )) { |
| 4762 | view->qminimization = true; |
| 4763 | view->qmin_strict = true; |
| 4764 | } else if (!strcmp(qminmode, "relaxed" )) { |
| 4765 | view->qminimization = true; |
| 4766 | view->qmin_strict = false; |
| 4767 | } else { /* "disabled" or "off" */ |
| 4768 | view->qminimization = false; |
| 4769 | view->qmin_strict = false; |
| 4770 | } |
| 4771 | |
| 4772 | obj = NULL; |
| 4773 | result = named_config_get(maps, "auth-nxdomain" , &obj); |
| 4774 | INSIST(result == ISC_R_SUCCESS); |
| 4775 | view->auth_nxdomain = cfg_obj_asboolean(obj); |
| 4776 | |
| 4777 | obj = NULL; |
| 4778 | result = named_config_get(maps, "glue-cache" , &obj); |
| 4779 | INSIST(result == ISC_R_SUCCESS); |
| 4780 | view->use_glue_cache = cfg_obj_asboolean(obj); |
| 4781 | |
| 4782 | obj = NULL; |
| 4783 | result = named_config_get(maps, "minimal-any" , &obj); |
| 4784 | INSIST(result == ISC_R_SUCCESS); |
| 4785 | view->minimal_any = cfg_obj_asboolean(obj); |
| 4786 | |
| 4787 | obj = NULL; |
| 4788 | result = named_config_get(maps, "minimal-responses" , &obj); |
| 4789 | INSIST(result == ISC_R_SUCCESS); |
| 4790 | if (cfg_obj_isboolean(obj)) { |
| 4791 | if (cfg_obj_asboolean(obj)) |
| 4792 | view->minimalresponses = dns_minimal_yes; |
| 4793 | else |
| 4794 | view->minimalresponses = dns_minimal_no; |
| 4795 | } else { |
| 4796 | str = cfg_obj_asstring(obj); |
| 4797 | if (strcasecmp(str, "no-auth" ) == 0) { |
| 4798 | view->minimalresponses = dns_minimal_noauth; |
| 4799 | } else if (strcasecmp(str, "no-auth-recursive" ) == 0) { |
| 4800 | view->minimalresponses = dns_minimal_noauthrec; |
| 4801 | } else { |
| 4802 | INSIST(0); |
| 4803 | ISC_UNREACHABLE(); |
| 4804 | } |
| 4805 | } |
| 4806 | |
| 4807 | obj = NULL; |
| 4808 | result = named_config_get(maps, "transfer-format" , &obj); |
| 4809 | INSIST(result == ISC_R_SUCCESS); |
| 4810 | str = cfg_obj_asstring(obj); |
| 4811 | if (strcasecmp(str, "many-answers" ) == 0) { |
| 4812 | view->transfer_format = dns_many_answers; |
| 4813 | } else if (strcasecmp(str, "one-answer" ) == 0) { |
| 4814 | view->transfer_format = dns_one_answer; |
| 4815 | } else { |
| 4816 | INSIST(0); |
| 4817 | ISC_UNREACHABLE(); |
| 4818 | } |
| 4819 | |
| 4820 | obj = NULL; |
| 4821 | result = named_config_get(maps, "trust-anchor-telemetry" , &obj); |
| 4822 | INSIST(result == ISC_R_SUCCESS); |
| 4823 | view->trust_anchor_telemetry = cfg_obj_asboolean(obj); |
| 4824 | |
| 4825 | obj = NULL; |
| 4826 | result = named_config_get(maps, "root-key-sentinel" , &obj); |
| 4827 | INSIST(result == ISC_R_SUCCESS); |
| 4828 | view->root_key_sentinel = cfg_obj_asboolean(obj); |
| 4829 | |
| 4830 | /* |
| 4831 | * Set the "allow-query", "allow-query-cache", "allow-recursion", |
| 4832 | * "allow-recursion-on" and "allow-query-cache-on" ACLs if |
| 4833 | * configured in named.conf, but NOT from the global defaults. |
| 4834 | * This is done by leaving the third argument to configure_view_acl() |
| 4835 | * NULL. |
| 4836 | * |
| 4837 | * We ignore the global defaults here because these ACLs |
| 4838 | * can inherit from each other. If any are still unset after |
| 4839 | * applying the inheritance rules, we'll look up the defaults at |
| 4840 | * that time. |
| 4841 | */ |
| 4842 | |
| 4843 | /* named.conf only */ |
| 4844 | CHECK(configure_view_acl(vconfig, config, NULL, |
| 4845 | "allow-query" , NULL, actx, |
| 4846 | named_g_mctx, &view->queryacl)); |
| 4847 | |
| 4848 | /* named.conf only */ |
| 4849 | CHECK(configure_view_acl(vconfig, config, NULL, |
| 4850 | "allow-query-cache" , NULL, actx, |
| 4851 | named_g_mctx, &view->cacheacl)); |
| 4852 | /* named.conf only */ |
| 4853 | CHECK(configure_view_acl(vconfig, config, NULL, |
| 4854 | "allow-query-cache-on" , NULL, actx, |
| 4855 | named_g_mctx, &view->cacheonacl)); |
| 4856 | |
| 4857 | if (strcmp(view->name, "_bind" ) != 0 && |
| 4858 | view->rdclass != dns_rdataclass_chaos) |
| 4859 | { |
| 4860 | /* named.conf only */ |
| 4861 | CHECK(configure_view_acl(vconfig, config, NULL, |
| 4862 | "allow-recursion" , NULL, actx, |
| 4863 | named_g_mctx, &view->recursionacl)); |
| 4864 | /* named.conf only */ |
| 4865 | CHECK(configure_view_acl(vconfig, config, NULL, |
| 4866 | "allow-recursion-on" , NULL, actx, |
| 4867 | named_g_mctx, &view->recursiononacl)); |
| 4868 | } |
| 4869 | |
| 4870 | if (view->recursion) { |
| 4871 | /* |
| 4872 | * "allow-query-cache" inherits from "allow-recursion" if set, |
| 4873 | * otherwise from "allow-query" if set. |
| 4874 | */ |
| 4875 | if (view->cacheacl == NULL) { |
| 4876 | if (view->recursionacl != NULL) { |
| 4877 | dns_acl_attach(view->recursionacl, |
| 4878 | &view->cacheacl); |
| 4879 | } else if (view->queryacl != NULL) { |
| 4880 | dns_acl_attach(view->queryacl, |
| 4881 | &view->cacheacl); |
| 4882 | } |
| 4883 | } |
| 4884 | |
| 4885 | /* |
| 4886 | * "allow-recursion" inherits from "allow-query-cache" if set, |
| 4887 | * otherwise from "allow-query" if set. |
| 4888 | */ |
| 4889 | if (view->recursionacl == NULL) { |
| 4890 | if (view->cacheacl != NULL) { |
| 4891 | dns_acl_attach(view->cacheacl, |
| 4892 | &view->recursionacl); |
| 4893 | } else if (view->queryacl != NULL) { |
| 4894 | dns_acl_attach(view->queryacl, |
| 4895 | &view->recursionacl); |
| 4896 | } |
| 4897 | } |
| 4898 | |
| 4899 | /* |
| 4900 | * "allow-query-cache-on" inherits from "allow-recursion-on" |
| 4901 | * if set. |
| 4902 | */ |
| 4903 | if (view->cacheonacl == NULL) { |
| 4904 | if (view->recursiononacl != NULL) { |
| 4905 | dns_acl_attach(view->recursiononacl, |
| 4906 | &view->cacheonacl); |
| 4907 | } |
| 4908 | } |
| 4909 | |
| 4910 | /* |
| 4911 | * "allow-recursion-on" inherits from "allow-query-cache-on" |
| 4912 | * if set. |
| 4913 | */ |
| 4914 | if (view->recursiononacl == NULL) { |
| 4915 | if (view->cacheonacl != NULL) { |
| 4916 | dns_acl_attach(view->cacheonacl, |
| 4917 | &view->recursiononacl); |
| 4918 | } |
| 4919 | } |
| 4920 | |
| 4921 | /* |
| 4922 | * If any are still unset at this point, we now get default |
| 4923 | * values for from the global config. |
| 4924 | */ |
| 4925 | |
| 4926 | if (view->recursionacl == NULL) { |
| 4927 | /* global default only */ |
| 4928 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 4929 | "allow-recursion" , NULL, |
| 4930 | actx, named_g_mctx, |
| 4931 | &view->recursionacl)); |
| 4932 | } |
| 4933 | if (view->recursiononacl == NULL) { |
| 4934 | /* global default only */ |
| 4935 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 4936 | "allow-recursion-on" , NULL, |
| 4937 | actx, named_g_mctx, |
| 4938 | &view->recursiononacl)); |
| 4939 | } |
| 4940 | if (view->cacheacl == NULL) { |
| 4941 | /* global default only */ |
| 4942 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 4943 | "allow-query-cache" , NULL, |
| 4944 | actx, named_g_mctx, |
| 4945 | &view->cacheacl)); |
| 4946 | } |
| 4947 | if (view->cacheonacl == NULL) { |
| 4948 | /* global default only */ |
| 4949 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 4950 | "allow-query-cache-on" , NULL, |
| 4951 | actx, named_g_mctx, |
| 4952 | &view->cacheonacl)); |
| 4953 | } |
| 4954 | } else { |
| 4955 | /* |
| 4956 | * We're not recursive; if the query-cache ACLs haven't |
| 4957 | * been set at the options/view level, set them to none. |
| 4958 | */ |
| 4959 | if (view->cacheacl == NULL) { |
| 4960 | CHECK(dns_acl_none(mctx, &view->cacheacl)); |
| 4961 | } |
| 4962 | if (view->cacheonacl == NULL) { |
| 4963 | CHECK(dns_acl_none(mctx, &view->cacheonacl)); |
| 4964 | } |
| 4965 | } |
| 4966 | |
| 4967 | /* |
| 4968 | * Finished setting recursion and query-cache ACLs, so now we |
| 4969 | * can get the allow-query default if it wasn't set in named.conf |
| 4970 | */ |
| 4971 | if (view->queryacl == NULL) { |
| 4972 | /* global default only */ |
| 4973 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 4974 | "allow-query" , NULL, |
| 4975 | actx, named_g_mctx, |
| 4976 | &view->queryacl)); |
| 4977 | } |
| 4978 | |
| 4979 | /* |
| 4980 | * Ignore case when compressing responses to the specified |
| 4981 | * clients. This causes case not always to be preserved, |
| 4982 | * and is needed by some broken clients. |
| 4983 | */ |
| 4984 | CHECK(configure_view_acl(vconfig, config, named_g_config, |
| 4985 | "no-case-compress" , NULL, actx, |
| 4986 | named_g_mctx, &view->nocasecompress)); |
| 4987 | |
| 4988 | /* |
| 4989 | * Disable name compression completely, this is a tradeoff |
| 4990 | * between CPU and network usage. |
| 4991 | */ |
| 4992 | obj = NULL; |
| 4993 | result = named_config_get(maps, "message-compression" , &obj); |
| 4994 | INSIST(result == ISC_R_SUCCESS); |
| 4995 | view->msgcompression = cfg_obj_asboolean(obj); |
| 4996 | |
| 4997 | /* |
| 4998 | * Filter setting on addresses in the answer section. |
| 4999 | */ |
| 5000 | CHECK(configure_view_acl(vconfig, config, named_g_config, |
| 5001 | "deny-answer-addresses" , "acl" , |
| 5002 | actx, named_g_mctx, |
| 5003 | &view->denyansweracl)); |
| 5004 | CHECK(configure_view_nametable(vconfig, config, "deny-answer-addresses" , |
| 5005 | "except-from" , named_g_mctx, |
| 5006 | &view->answeracl_exclude)); |
| 5007 | |
| 5008 | /* |
| 5009 | * Filter setting on names (CNAME/DNAME targets) in the answer section. |
| 5010 | */ |
| 5011 | CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases" , |
| 5012 | "name" , named_g_mctx, |
| 5013 | &view->denyanswernames)); |
| 5014 | CHECK(configure_view_nametable(vconfig, config, "deny-answer-aliases" , |
| 5015 | "except-from" , named_g_mctx, |
| 5016 | &view->answernames_exclude)); |
| 5017 | |
| 5018 | /* |
| 5019 | * Configure sortlist, if set |
| 5020 | */ |
| 5021 | CHECK(configure_view_sortlist(vconfig, config, actx, named_g_mctx, |
| 5022 | &view->sortlist)); |
| 5023 | |
| 5024 | /* |
| 5025 | * Configure default allow-update and allow-update-forwarding ACLs, |
| 5026 | * so they can be inherited by zones. (XXX: These are not |
| 5027 | * read from the options/view level here. However, they may be |
| 5028 | * read from there in zoneconf.c:configure_zone_acl() later.) |
| 5029 | */ |
| 5030 | if (view->updateacl == NULL) { |
| 5031 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 5032 | "allow-update" , NULL, actx, |
| 5033 | named_g_mctx, &view->updateacl)); |
| 5034 | } |
| 5035 | if (view->upfwdacl == NULL) { |
| 5036 | CHECK(configure_view_acl(NULL, NULL, named_g_config, |
| 5037 | "allow-update-forwarding" , NULL, actx, |
| 5038 | named_g_mctx, &view->upfwdacl)); |
| 5039 | } |
| 5040 | |
| 5041 | /* |
| 5042 | * Configure default allow-transfer and allow-notify ACLs so they |
| 5043 | * can be inherited by zones. |
| 5044 | */ |
| 5045 | if (view->transferacl == NULL) { |
| 5046 | CHECK(configure_view_acl(vconfig, config, named_g_config, |
| 5047 | "allow-transfer" , NULL, actx, |
| 5048 | named_g_mctx, &view->transferacl)); |
| 5049 | } |
| 5050 | if (view->notifyacl == NULL) { |
| 5051 | CHECK(configure_view_acl(vconfig, config, named_g_config, |
| 5052 | "allow-notify" , NULL, actx, |
| 5053 | named_g_mctx, &view->notifyacl)); |
| 5054 | } |
| 5055 | |
| 5056 | obj = NULL; |
| 5057 | result = named_config_get(maps, "provide-ixfr" , &obj); |
| 5058 | INSIST(result == ISC_R_SUCCESS); |
| 5059 | view->provideixfr = cfg_obj_asboolean(obj); |
| 5060 | |
| 5061 | obj = NULL; |
| 5062 | result = named_config_get(maps, "request-nsid" , &obj); |
| 5063 | INSIST(result == ISC_R_SUCCESS); |
| 5064 | view->requestnsid = cfg_obj_asboolean(obj); |
| 5065 | |
| 5066 | obj = NULL; |
| 5067 | result = named_config_get(maps, "send-cookie" , &obj); |
| 5068 | INSIST(result == ISC_R_SUCCESS); |
| 5069 | view->sendcookie = cfg_obj_asboolean(obj); |
| 5070 | |
| 5071 | obj = NULL; |
| 5072 | if (view->pad_acl != NULL) |
| 5073 | dns_acl_detach(&view->pad_acl); |
| 5074 | result = named_config_get(optionmaps, "response-padding" , &obj); |
| 5075 | if (result == ISC_R_SUCCESS) { |
| 5076 | const cfg_obj_t *padobj = cfg_tuple_get(obj, "block-size" ); |
| 5077 | const cfg_obj_t *aclobj = cfg_tuple_get(obj, "acl" ); |
| 5078 | uint32_t padding = cfg_obj_asuint32(padobj); |
| 5079 | |
| 5080 | if (padding > 512U) { |
| 5081 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 5082 | "response-padding block-size cannot " |
| 5083 | "exceed 512: lowering" ); |
| 5084 | padding = 512U; |
| 5085 | } |
| 5086 | view->padding = (uint16_t)padding; |
| 5087 | CHECK(cfg_acl_fromconfig(aclobj, config, named_g_lctx, |
| 5088 | actx, named_g_mctx, 0, |
| 5089 | &view->pad_acl)); |
| 5090 | } |
| 5091 | |
| 5092 | obj = NULL; |
| 5093 | result = named_config_get(maps, "require-server-cookie" , &obj); |
| 5094 | INSIST(result == ISC_R_SUCCESS); |
| 5095 | view->requireservercookie = cfg_obj_asboolean(obj); |
| 5096 | |
| 5097 | obj = NULL; |
| 5098 | result = named_config_get(maps, "v6-bias" , &obj); |
| 5099 | INSIST(result == ISC_R_SUCCESS); |
| 5100 | view->v6bias = cfg_obj_asuint32(obj) * 1000; |
| 5101 | |
| 5102 | obj = NULL; |
| 5103 | result = named_config_get(maps, "max-clients-per-query" , &obj); |
| 5104 | INSIST(result == ISC_R_SUCCESS); |
| 5105 | max_clients_per_query = cfg_obj_asuint32(obj); |
| 5106 | |
| 5107 | obj = NULL; |
| 5108 | result = named_config_get(maps, "clients-per-query" , &obj); |
| 5109 | INSIST(result == ISC_R_SUCCESS); |
| 5110 | dns_resolver_setclientsperquery(view->resolver, |
| 5111 | cfg_obj_asuint32(obj), |
| 5112 | max_clients_per_query); |
| 5113 | |
| 5114 | obj = NULL; |
| 5115 | result = named_config_get(maps, "max-recursion-depth" , &obj); |
| 5116 | INSIST(result == ISC_R_SUCCESS); |
| 5117 | dns_resolver_setmaxdepth(view->resolver, cfg_obj_asuint32(obj)); |
| 5118 | |
| 5119 | obj = NULL; |
| 5120 | result = named_config_get(maps, "max-recursion-queries" , &obj); |
| 5121 | INSIST(result == ISC_R_SUCCESS); |
| 5122 | dns_resolver_setmaxqueries(view->resolver, cfg_obj_asuint32(obj)); |
| 5123 | |
| 5124 | obj = NULL; |
| 5125 | result = named_config_get(maps, "fetches-per-zone" , &obj); |
| 5126 | INSIST(result == ISC_R_SUCCESS); |
| 5127 | obj2 = cfg_tuple_get(obj, "fetches" ); |
| 5128 | dns_resolver_setfetchesperzone(view->resolver, cfg_obj_asuint32(obj2)); |
| 5129 | obj2 = cfg_tuple_get(obj, "response" ); |
| 5130 | if (!cfg_obj_isvoid(obj2)) { |
| 5131 | const char *resp = cfg_obj_asstring(obj2); |
| 5132 | isc_result_t r = DNS_R_SERVFAIL; |
| 5133 | |
| 5134 | if (strcasecmp(resp, "drop" ) == 0) { |
| 5135 | r = DNS_R_DROP; |
| 5136 | } else if (strcasecmp(resp, "fail" ) == 0) { |
| 5137 | r = DNS_R_SERVFAIL; |
| 5138 | } else { |
| 5139 | INSIST(0); |
| 5140 | ISC_UNREACHABLE(); |
| 5141 | } |
| 5142 | |
| 5143 | dns_resolver_setquotaresponse(view->resolver, |
| 5144 | dns_quotatype_zone, r); |
| 5145 | } |
| 5146 | |
| 5147 | obj = NULL; |
| 5148 | result = named_config_get(maps, "prefetch" , &obj); |
| 5149 | if (result == ISC_R_SUCCESS) { |
| 5150 | const cfg_obj_t *trigger, *eligible; |
| 5151 | |
| 5152 | trigger = cfg_tuple_get(obj, "trigger" ); |
| 5153 | view->prefetch_trigger = cfg_obj_asuint32(trigger); |
| 5154 | if (view->prefetch_trigger > 10) |
| 5155 | view->prefetch_trigger = 10; |
| 5156 | eligible = cfg_tuple_get(obj, "eligible" ); |
| 5157 | if (cfg_obj_isvoid(eligible)) { |
| 5158 | int m; |
| 5159 | for (m = 1; maps[m] != NULL; m++) { |
| 5160 | obj = NULL; |
| 5161 | result = named_config_get(&maps[m], |
| 5162 | "prefetch" , &obj); |
| 5163 | INSIST(result == ISC_R_SUCCESS); |
| 5164 | eligible = cfg_tuple_get(obj, "eligible" ); |
| 5165 | if (cfg_obj_isuint32(eligible)) |
| 5166 | break; |
| 5167 | } |
| 5168 | INSIST(cfg_obj_isuint32(eligible)); |
| 5169 | } |
| 5170 | view->prefetch_eligible = cfg_obj_asuint32(eligible); |
| 5171 | if (view->prefetch_eligible < view->prefetch_trigger + 6) |
| 5172 | view->prefetch_eligible = view->prefetch_trigger + 6; |
| 5173 | } |
| 5174 | |
| 5175 | obj = NULL; |
| 5176 | result = named_config_get(optionmaps, "dnssec-lookaside" , &obj); |
| 5177 | if (result == ISC_R_SUCCESS) { |
| 5178 | /* "auto" is deprecated, log a warning if seen */ |
| 5179 | const char *dom; |
| 5180 | dlvobj = cfg_listelt_value(cfg_list_first(obj)); |
| 5181 | dom = cfg_obj_asstring(cfg_tuple_get(dlvobj, "domain" )); |
| 5182 | if (cfg_obj_isvoid(cfg_tuple_get(dlvobj, "trust-anchor" ))) { |
| 5183 | /* If "no", skip; if "auto", log warning */ |
| 5184 | if (!strcasecmp(dom, "no" )) { |
| 5185 | result = ISC_R_NOTFOUND; |
| 5186 | } else if (!strcasecmp(dom, "auto" )) { |
| 5187 | /* |
| 5188 | * Warning logged by libbind9. |
| 5189 | */ |
| 5190 | result = ISC_R_NOTFOUND; |
| 5191 | } |
| 5192 | } |
| 5193 | } |
| 5194 | |
| 5195 | if (result == ISC_R_SUCCESS) { |
| 5196 | dns_name_t *dlv, *iscdlv; |
| 5197 | dns_fixedname_t f; |
| 5198 | |
| 5199 | /* Also log a warning if manually configured to dlv.isc.org */ |
| 5200 | iscdlv = dns_fixedname_initname(&f); |
| 5201 | CHECK(dns_name_fromstring(iscdlv, "dlv.isc.org" , 0, NULL)); |
| 5202 | |
| 5203 | for (element = cfg_list_first(obj); |
| 5204 | element != NULL; |
| 5205 | element = cfg_list_next(element)) |
| 5206 | { |
| 5207 | obj = cfg_listelt_value(element); |
| 5208 | obj = cfg_tuple_get(obj, "trust-anchor" ); |
| 5209 | |
| 5210 | dlv = dns_fixedname_name(&view->dlv_fixed); |
| 5211 | CHECK(dns_name_fromstring(dlv, cfg_obj_asstring(obj), |
| 5212 | DNS_NAME_DOWNCASE, NULL)); |
| 5213 | if (dns_name_equal(dlv, iscdlv)) { |
| 5214 | /* |
| 5215 | * Warning logged by libbind9. |
| 5216 | */ |
| 5217 | view->dlv = NULL; |
| 5218 | } else { |
| 5219 | view->dlv = dlv; |
| 5220 | } |
| 5221 | } |
| 5222 | } else { |
| 5223 | view->dlv = NULL; |
| 5224 | } |
| 5225 | |
| 5226 | /* |
| 5227 | * For now, there is only one kind of trusted keys, the |
| 5228 | * "security roots". |
| 5229 | */ |
| 5230 | CHECK(configure_view_dnsseckeys(view, vconfig, config, bindkeys, |
| 5231 | auto_root, mctx)); |
| 5232 | dns_resolver_resetmustbesecure(view->resolver); |
| 5233 | obj = NULL; |
| 5234 | result = named_config_get(maps, "dnssec-must-be-secure" , &obj); |
| 5235 | if (result == ISC_R_SUCCESS) |
| 5236 | CHECK(mustbesecure(obj, view->resolver)); |
| 5237 | |
| 5238 | obj = NULL; |
| 5239 | result = named_config_get(maps, "nta-recheck" , &obj); |
| 5240 | INSIST(result == ISC_R_SUCCESS); |
| 5241 | view->nta_recheck = cfg_obj_asuint32(obj); |
| 5242 | |
| 5243 | obj = NULL; |
| 5244 | result = named_config_get(maps, "nta-lifetime" , &obj); |
| 5245 | INSIST(result == ISC_R_SUCCESS); |
| 5246 | view->nta_lifetime = cfg_obj_asuint32(obj); |
| 5247 | |
| 5248 | obj = NULL; |
| 5249 | result = named_config_get(maps, "preferred-glue" , &obj); |
| 5250 | if (result == ISC_R_SUCCESS) { |
| 5251 | str = cfg_obj_asstring(obj); |
| 5252 | if (strcasecmp(str, "a" ) == 0) |
| 5253 | view->preferred_glue = dns_rdatatype_a; |
| 5254 | else if (strcasecmp(str, "aaaa" ) == 0) |
| 5255 | view->preferred_glue = dns_rdatatype_aaaa; |
| 5256 | else |
| 5257 | view->preferred_glue = 0; |
| 5258 | } else |
| 5259 | view->preferred_glue = 0; |
| 5260 | |
| 5261 | obj = NULL; |
| 5262 | result = named_config_get(maps, "root-delegation-only" , &obj); |
| 5263 | if (result == ISC_R_SUCCESS) |
| 5264 | dns_view_setrootdelonly(view, true); |
| 5265 | if (result == ISC_R_SUCCESS && ! cfg_obj_isvoid(obj)) { |
| 5266 | const cfg_obj_t *exclude; |
| 5267 | dns_fixedname_t fixed; |
| 5268 | dns_name_t *name; |
| 5269 | |
| 5270 | name = dns_fixedname_initname(&fixed); |
| 5271 | for (element = cfg_list_first(obj); |
| 5272 | element != NULL; |
| 5273 | element = cfg_list_next(element)) |
| 5274 | { |
| 5275 | exclude = cfg_listelt_value(element); |
| 5276 | CHECK(dns_name_fromstring(name, |
| 5277 | cfg_obj_asstring(exclude), |
| 5278 | 0, NULL)); |
| 5279 | CHECK(dns_view_excludedelegationonly(view, name)); |
| 5280 | } |
| 5281 | } else |
| 5282 | dns_view_setrootdelonly(view, false); |
| 5283 | |
| 5284 | /* |
| 5285 | * Load DynDB modules. |
| 5286 | */ |
| 5287 | dyndb_list = NULL; |
| 5288 | if (voptions != NULL) { |
| 5289 | (void)cfg_map_get(voptions, "dyndb" , &dyndb_list); |
| 5290 | } else { |
| 5291 | (void)cfg_map_get(config, "dyndb" , &dyndb_list); |
| 5292 | } |
| 5293 | |
| 5294 | #ifdef HAVE_DLOPEN |
| 5295 | for (element = cfg_list_first(dyndb_list); |
| 5296 | element != NULL; |
| 5297 | element = cfg_list_next(element)) |
| 5298 | { |
| 5299 | const cfg_obj_t *dyndb = cfg_listelt_value(element); |
| 5300 | |
| 5301 | if (dctx == NULL) { |
| 5302 | const void *hashinit = isc_hash_get_initializer(); |
| 5303 | CHECK(dns_dyndb_createctx(mctx, hashinit, |
| 5304 | named_g_lctx, view, |
| 5305 | named_g_server->zonemgr, |
| 5306 | named_g_server->task, |
| 5307 | named_g_timermgr, &dctx)); |
| 5308 | } |
| 5309 | |
| 5310 | CHECK(configure_dyndb(dyndb, mctx, dctx)); |
| 5311 | } |
| 5312 | #endif |
| 5313 | |
| 5314 | /* |
| 5315 | * Load plugins. |
| 5316 | */ |
| 5317 | plugin_list = NULL; |
| 5318 | if (voptions != NULL) { |
| 5319 | (void)cfg_map_get(voptions, "plugin" , &plugin_list); |
| 5320 | } else { |
| 5321 | (void)cfg_map_get(config, "plugin" , &plugin_list); |
| 5322 | } |
| 5323 | |
| 5324 | #ifdef HAVE_DLOPEN |
| 5325 | if (plugin_list != NULL) { |
| 5326 | INSIST(view->hooktable == NULL); |
| 5327 | CHECK(ns_hooktable_create(view->mctx, |
| 5328 | (ns_hooktable_t **) &view->hooktable)); |
| 5329 | view->hooktable_free = ns_hooktable_free; |
| 5330 | |
| 5331 | ns_plugins_create(view->mctx, (ns_plugins_t **)&view->plugins); |
| 5332 | view->plugins_free = ns_plugins_free; |
| 5333 | |
| 5334 | CHECK(cfg_pluginlist_foreach(config, plugin_list, named_g_lctx, |
| 5335 | register_one_plugin, view)); |
| 5336 | } |
| 5337 | #endif |
| 5338 | |
| 5339 | /* |
| 5340 | * Setup automatic empty zones. If recursion is off then |
| 5341 | * they are disabled by default. |
| 5342 | */ |
| 5343 | obj = NULL; |
| 5344 | (void)named_config_get(maps, "empty-zones-enable" , &obj); |
| 5345 | (void)named_config_get(maps, "disable-empty-zone" , &disablelist); |
| 5346 | if (obj == NULL && disablelist == NULL && |
| 5347 | view->rdclass == dns_rdataclass_in) { |
| 5348 | empty_zones_enable = view->recursion; |
| 5349 | } else if (view->rdclass == dns_rdataclass_in) { |
| 5350 | if (obj != NULL) |
| 5351 | empty_zones_enable = cfg_obj_asboolean(obj); |
| 5352 | else |
| 5353 | empty_zones_enable = view->recursion; |
| 5354 | } else { |
| 5355 | empty_zones_enable = false; |
| 5356 | } |
| 5357 | |
| 5358 | if (empty_zones_enable) { |
| 5359 | const char *empty; |
| 5360 | int empty_zone = 0; |
| 5361 | dns_fixedname_t fixed; |
| 5362 | dns_name_t *name; |
| 5363 | isc_buffer_t buffer; |
| 5364 | char server[DNS_NAME_FORMATSIZE + 1]; |
| 5365 | char contact[DNS_NAME_FORMATSIZE + 1]; |
| 5366 | const char *empty_dbtype[4] = |
| 5367 | { "_builtin" , "empty" , NULL, NULL }; |
| 5368 | int empty_dbtypec = 4; |
| 5369 | dns_zonestat_level_t statlevel = dns_zonestat_none; |
| 5370 | |
| 5371 | name = dns_fixedname_initname(&fixed); |
| 5372 | |
| 5373 | obj = NULL; |
| 5374 | result = named_config_get(maps, "empty-server" , &obj); |
| 5375 | if (result == ISC_R_SUCCESS) { |
| 5376 | CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj), |
| 5377 | 0, NULL)); |
| 5378 | isc_buffer_init(&buffer, server, sizeof(server) - 1); |
| 5379 | CHECK(dns_name_totext(name, false, &buffer)); |
| 5380 | server[isc_buffer_usedlength(&buffer)] = 0; |
| 5381 | empty_dbtype[2] = server; |
| 5382 | } else |
| 5383 | empty_dbtype[2] = "@" ; |
| 5384 | |
| 5385 | obj = NULL; |
| 5386 | result = named_config_get(maps, "empty-contact" , &obj); |
| 5387 | if (result == ISC_R_SUCCESS) { |
| 5388 | CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj), |
| 5389 | 0, NULL)); |
| 5390 | isc_buffer_init(&buffer, contact, sizeof(contact) - 1); |
| 5391 | CHECK(dns_name_totext(name, false, &buffer)); |
| 5392 | contact[isc_buffer_usedlength(&buffer)] = 0; |
| 5393 | empty_dbtype[3] = contact; |
| 5394 | } else |
| 5395 | empty_dbtype[3] = "." ; |
| 5396 | |
| 5397 | obj = NULL; |
| 5398 | result = named_config_get(maps, "zone-statistics" , &obj); |
| 5399 | INSIST(result == ISC_R_SUCCESS); |
| 5400 | if (cfg_obj_isboolean(obj)) { |
| 5401 | if (cfg_obj_asboolean(obj)) |
| 5402 | statlevel = dns_zonestat_full; |
| 5403 | else |
| 5404 | statlevel = dns_zonestat_none; |
| 5405 | } else { |
| 5406 | const char *levelstr = cfg_obj_asstring(obj); |
| 5407 | if (strcasecmp(levelstr, "full" ) == 0) { |
| 5408 | statlevel = dns_zonestat_full; |
| 5409 | } else if (strcasecmp(levelstr, "terse" ) == 0) { |
| 5410 | statlevel = dns_zonestat_terse; |
| 5411 | } else if (strcasecmp(levelstr, "none" ) == 0) { |
| 5412 | statlevel = dns_zonestat_none; |
| 5413 | } else { |
| 5414 | INSIST(0); |
| 5415 | ISC_UNREACHABLE(); |
| 5416 | } |
| 5417 | } |
| 5418 | |
| 5419 | for (empty = empty_zones[empty_zone]; |
| 5420 | empty != NULL; |
| 5421 | empty = empty_zones[++empty_zone]) |
| 5422 | { |
| 5423 | dns_forwarders_t *dnsforwarders = NULL; |
| 5424 | |
| 5425 | /* |
| 5426 | * Look for zone on drop list. |
| 5427 | */ |
| 5428 | CHECK(dns_name_fromstring(name, empty, 0, NULL)); |
| 5429 | if (disablelist != NULL && |
| 5430 | on_disable_list(disablelist, name)) |
| 5431 | continue; |
| 5432 | |
| 5433 | /* |
| 5434 | * This zone already exists. |
| 5435 | */ |
| 5436 | (void)dns_view_findzone(view, name, &zone); |
| 5437 | if (zone != NULL) { |
| 5438 | dns_zone_detach(&zone); |
| 5439 | continue; |
| 5440 | } |
| 5441 | |
| 5442 | /* |
| 5443 | * If we would forward this name don't add a |
| 5444 | * empty zone for it. |
| 5445 | */ |
| 5446 | result = dns_fwdtable_find(view->fwdtable, name, |
| 5447 | NULL, &dnsforwarders); |
| 5448 | if (result == ISC_R_SUCCESS && |
| 5449 | dnsforwarders->fwdpolicy == dns_fwdpolicy_only) |
| 5450 | continue; |
| 5451 | |
| 5452 | /* |
| 5453 | * See if we can re-use a existing zone. |
| 5454 | */ |
| 5455 | result = dns_viewlist_find(&named_g_server->viewlist, |
| 5456 | view->name, view->rdclass, |
| 5457 | &pview); |
| 5458 | if (result != ISC_R_NOTFOUND && |
| 5459 | result != ISC_R_SUCCESS) |
| 5460 | goto cleanup; |
| 5461 | |
| 5462 | if (pview != NULL) { |
| 5463 | (void)dns_view_findzone(pview, name, &zone); |
| 5464 | dns_view_detach(&pview); |
| 5465 | } |
| 5466 | |
| 5467 | CHECK(create_empty_zone(zone, name, view, zonelist, |
| 5468 | empty_dbtype, empty_dbtypec, |
| 5469 | statlevel)); |
| 5470 | if (zone != NULL) |
| 5471 | dns_zone_detach(&zone); |
| 5472 | } |
| 5473 | } |
| 5474 | |
| 5475 | obj = NULL; |
| 5476 | result = named_config_get(maps, "rate-limit" , &obj); |
| 5477 | if (result == ISC_R_SUCCESS) { |
| 5478 | result = configure_rrl(view, config, obj); |
| 5479 | if (result != ISC_R_SUCCESS) |
| 5480 | goto cleanup; |
| 5481 | } |
| 5482 | |
| 5483 | /* |
| 5484 | * Set the servfail-ttl. |
| 5485 | */ |
| 5486 | obj = NULL; |
| 5487 | result = named_config_get(maps, "servfail-ttl" , &obj); |
| 5488 | INSIST(result == ISC_R_SUCCESS); |
| 5489 | fail_ttl = cfg_obj_asuint32(obj); |
| 5490 | if (fail_ttl > 30) |
| 5491 | fail_ttl = 30; |
| 5492 | dns_view_setfailttl(view, fail_ttl); |
| 5493 | |
| 5494 | /* |
| 5495 | * Name space to look up redirect information in. |
| 5496 | */ |
| 5497 | obj = NULL; |
| 5498 | result = named_config_get(maps, "nxdomain-redirect" , &obj); |
| 5499 | if (result == ISC_R_SUCCESS) { |
| 5500 | dns_name_t *name = dns_fixedname_name(&view->redirectfixed); |
| 5501 | CHECK(dns_name_fromstring(name, cfg_obj_asstring(obj), 0, |
| 5502 | NULL)); |
| 5503 | view->redirectzone = name; |
| 5504 | } else { |
| 5505 | view->redirectzone = NULL; |
| 5506 | } |
| 5507 | |
| 5508 | /* |
| 5509 | * Exceptions to DNSSEC validation. |
| 5510 | */ |
| 5511 | obj = NULL; |
| 5512 | result = named_config_get(maps, "validate-except" , &obj); |
| 5513 | if (result == ISC_R_SUCCESS) { |
| 5514 | result = dns_view_getntatable(view, &ntatable); |
| 5515 | } |
| 5516 | if (result == ISC_R_SUCCESS) { |
| 5517 | for (element = cfg_list_first(obj); |
| 5518 | element != NULL; |
| 5519 | element = cfg_list_next(element)) |
| 5520 | { |
| 5521 | dns_fixedname_t fntaname; |
| 5522 | dns_name_t *ntaname; |
| 5523 | |
| 5524 | ntaname = dns_fixedname_initname(&fntaname); |
| 5525 | obj = cfg_listelt_value(element); |
| 5526 | CHECK(dns_name_fromstring(ntaname, |
| 5527 | cfg_obj_asstring(obj), |
| 5528 | 0, NULL)); |
| 5529 | CHECK(dns_ntatable_add(ntatable, ntaname, |
| 5530 | true, 0, 0xffffffffU)); |
| 5531 | } |
| 5532 | } |
| 5533 | |
| 5534 | #ifdef HAVE_DNSTAP |
| 5535 | /* |
| 5536 | * Set up the dnstap environment and configure message |
| 5537 | * types to log. |
| 5538 | */ |
| 5539 | CHECK(configure_dnstap(maps, view)); |
| 5540 | #endif /* HAVE_DNSTAP */ |
| 5541 | |
| 5542 | result = ISC_R_SUCCESS; |
| 5543 | |
| 5544 | cleanup: |
| 5545 | if (ntatable != NULL) { |
| 5546 | dns_ntatable_detach(&ntatable); |
| 5547 | } |
| 5548 | if (clients != NULL) { |
| 5549 | dns_acl_detach(&clients); |
| 5550 | } |
| 5551 | if (mapped != NULL) { |
| 5552 | dns_acl_detach(&mapped); |
| 5553 | } |
| 5554 | if (excluded != NULL) { |
| 5555 | dns_acl_detach(&excluded); |
| 5556 | } |
| 5557 | if (ring != NULL) { |
| 5558 | dns_tsigkeyring_detach(&ring); |
| 5559 | } |
| 5560 | if (zone != NULL) { |
| 5561 | dns_zone_detach(&zone); |
| 5562 | } |
| 5563 | if (dispatch4 != NULL) { |
| 5564 | dns_dispatch_detach(&dispatch4); |
| 5565 | } |
| 5566 | if (dispatch6 != NULL) { |
| 5567 | dns_dispatch_detach(&dispatch6); |
| 5568 | } |
| 5569 | if (resstats != NULL) { |
| 5570 | isc_stats_detach(&resstats); |
| 5571 | } |
| 5572 | if (resquerystats != NULL) { |
| 5573 | dns_stats_detach(&resquerystats); |
| 5574 | } |
| 5575 | if (order != NULL) { |
| 5576 | dns_order_detach(&order); |
| 5577 | } |
| 5578 | if (cmctx != NULL) { |
| 5579 | isc_mem_detach(&cmctx); |
| 5580 | } |
| 5581 | if (hmctx != NULL) { |
| 5582 | isc_mem_detach(&hmctx); |
| 5583 | } |
| 5584 | if (cache != NULL) { |
| 5585 | dns_cache_detach(&cache); |
| 5586 | } |
| 5587 | if (dctx != NULL) { |
| 5588 | dns_dyndb_destroyctx(&dctx); |
| 5589 | } |
| 5590 | |
| 5591 | return (result); |
| 5592 | } |
| 5593 | |
| 5594 | static isc_result_t |
| 5595 | configure_hints(dns_view_t *view, const char *filename) { |
| 5596 | isc_result_t result; |
| 5597 | dns_db_t *db; |
| 5598 | |
| 5599 | db = NULL; |
| 5600 | result = dns_rootns_create(view->mctx, view->rdclass, filename, &db); |
| 5601 | if (result == ISC_R_SUCCESS) { |
| 5602 | dns_view_sethints(view, db); |
| 5603 | dns_db_detach(&db); |
| 5604 | } |
| 5605 | |
| 5606 | return (result); |
| 5607 | } |
| 5608 | |
| 5609 | static isc_result_t |
| 5610 | configure_alternates(const cfg_obj_t *config, dns_view_t *view, |
| 5611 | const cfg_obj_t *alternates) |
| 5612 | { |
| 5613 | const cfg_obj_t *portobj; |
| 5614 | const cfg_obj_t *addresses; |
| 5615 | const cfg_listelt_t *element; |
| 5616 | isc_result_t result = ISC_R_SUCCESS; |
| 5617 | in_port_t port; |
| 5618 | |
| 5619 | /* |
| 5620 | * Determine which port to send requests to. |
| 5621 | */ |
| 5622 | CHECKM(named_config_getport(config, &port), "port" ); |
| 5623 | |
| 5624 | if (alternates != NULL) { |
| 5625 | portobj = cfg_tuple_get(alternates, "port" ); |
| 5626 | if (cfg_obj_isuint32(portobj)) { |
| 5627 | uint32_t val = cfg_obj_asuint32(portobj); |
| 5628 | if (val > UINT16_MAX) { |
| 5629 | cfg_obj_log(portobj, named_g_lctx, |
| 5630 | ISC_LOG_ERROR, |
| 5631 | "port '%u' out of range" , val); |
| 5632 | return (ISC_R_RANGE); |
| 5633 | } |
| 5634 | port = (in_port_t) val; |
| 5635 | } |
| 5636 | } |
| 5637 | |
| 5638 | addresses = NULL; |
| 5639 | if (alternates != NULL) |
| 5640 | addresses = cfg_tuple_get(alternates, "addresses" ); |
| 5641 | |
| 5642 | for (element = cfg_list_first(addresses); |
| 5643 | element != NULL; |
| 5644 | element = cfg_list_next(element)) |
| 5645 | { |
| 5646 | const cfg_obj_t *alternate = cfg_listelt_value(element); |
| 5647 | isc_sockaddr_t sa; |
| 5648 | |
| 5649 | if (!cfg_obj_issockaddr(alternate)) { |
| 5650 | dns_fixedname_t fixed; |
| 5651 | dns_name_t *name; |
| 5652 | const char *str = cfg_obj_asstring(cfg_tuple_get( |
| 5653 | alternate, "name" )); |
| 5654 | isc_buffer_t buffer; |
| 5655 | in_port_t myport = port; |
| 5656 | |
| 5657 | isc_buffer_constinit(&buffer, str, strlen(str)); |
| 5658 | isc_buffer_add(&buffer, strlen(str)); |
| 5659 | name = dns_fixedname_initname(&fixed); |
| 5660 | CHECK(dns_name_fromtext(name, &buffer, dns_rootname, 0, |
| 5661 | NULL)); |
| 5662 | |
| 5663 | portobj = cfg_tuple_get(alternate, "port" ); |
| 5664 | if (cfg_obj_isuint32(portobj)) { |
| 5665 | uint32_t val = cfg_obj_asuint32(portobj); |
| 5666 | if (val > UINT16_MAX) { |
| 5667 | cfg_obj_log(portobj, named_g_lctx, |
| 5668 | ISC_LOG_ERROR, |
| 5669 | "port '%u' out of range" , |
| 5670 | val); |
| 5671 | return (ISC_R_RANGE); |
| 5672 | } |
| 5673 | myport = (in_port_t) val; |
| 5674 | } |
| 5675 | CHECK(dns_resolver_addalternate(view->resolver, NULL, |
| 5676 | name, myport)); |
| 5677 | continue; |
| 5678 | } |
| 5679 | |
| 5680 | sa = *cfg_obj_assockaddr(alternate); |
| 5681 | if (isc_sockaddr_getport(&sa) == 0) |
| 5682 | isc_sockaddr_setport(&sa, port); |
| 5683 | CHECK(dns_resolver_addalternate(view->resolver, &sa, |
| 5684 | NULL, 0)); |
| 5685 | } |
| 5686 | |
| 5687 | cleanup: |
| 5688 | return (result); |
| 5689 | } |
| 5690 | |
| 5691 | static isc_result_t |
| 5692 | configure_forward(const cfg_obj_t *config, dns_view_t *view, |
| 5693 | const dns_name_t *origin, const cfg_obj_t *forwarders, |
| 5694 | const cfg_obj_t *forwardtype) |
| 5695 | { |
| 5696 | const cfg_obj_t *portobj, *dscpobj; |
| 5697 | const cfg_obj_t *faddresses; |
| 5698 | const cfg_listelt_t *element; |
| 5699 | dns_fwdpolicy_t fwdpolicy = dns_fwdpolicy_none; |
| 5700 | dns_forwarderlist_t fwdlist; |
| 5701 | dns_forwarder_t *fwd; |
| 5702 | isc_result_t result; |
| 5703 | in_port_t port; |
| 5704 | isc_dscp_t dscp = -1; |
| 5705 | |
| 5706 | ISC_LIST_INIT(fwdlist); |
| 5707 | |
| 5708 | /* |
| 5709 | * Determine which port to send forwarded requests to. |
| 5710 | */ |
| 5711 | CHECKM(named_config_getport(config, &port), "port" ); |
| 5712 | |
| 5713 | if (forwarders != NULL) { |
| 5714 | portobj = cfg_tuple_get(forwarders, "port" ); |
| 5715 | if (cfg_obj_isuint32(portobj)) { |
| 5716 | uint32_t val = cfg_obj_asuint32(portobj); |
| 5717 | if (val > UINT16_MAX) { |
| 5718 | cfg_obj_log(portobj, named_g_lctx, |
| 5719 | ISC_LOG_ERROR, |
| 5720 | "port '%u' out of range" , val); |
| 5721 | return (ISC_R_RANGE); |
| 5722 | } |
| 5723 | port = (in_port_t) val; |
| 5724 | } |
| 5725 | } |
| 5726 | |
| 5727 | /* |
| 5728 | * DSCP value for forwarded requests. |
| 5729 | */ |
| 5730 | dscp = named_g_dscp; |
| 5731 | if (forwarders != NULL) { |
| 5732 | dscpobj = cfg_tuple_get(forwarders, "dscp" ); |
| 5733 | if (cfg_obj_isuint32(dscpobj)) { |
| 5734 | if (cfg_obj_asuint32(dscpobj) > 63) { |
| 5735 | cfg_obj_log(dscpobj, named_g_lctx, |
| 5736 | ISC_LOG_ERROR, |
| 5737 | "dscp value '%u' is out of range" , |
| 5738 | cfg_obj_asuint32(dscpobj)); |
| 5739 | return (ISC_R_RANGE); |
| 5740 | } |
| 5741 | dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj); |
| 5742 | } |
| 5743 | } |
| 5744 | |
| 5745 | faddresses = NULL; |
| 5746 | if (forwarders != NULL) |
| 5747 | faddresses = cfg_tuple_get(forwarders, "addresses" ); |
| 5748 | |
| 5749 | for (element = cfg_list_first(faddresses); |
| 5750 | element != NULL; |
| 5751 | element = cfg_list_next(element)) |
| 5752 | { |
| 5753 | const cfg_obj_t *forwarder = cfg_listelt_value(element); |
| 5754 | fwd = isc_mem_get(view->mctx, sizeof(dns_forwarder_t)); |
| 5755 | if (fwd == NULL) { |
| 5756 | result = ISC_R_NOMEMORY; |
| 5757 | goto cleanup; |
| 5758 | } |
| 5759 | fwd->addr = *cfg_obj_assockaddr(forwarder); |
| 5760 | if (isc_sockaddr_getport(&fwd->addr) == 0) |
| 5761 | isc_sockaddr_setport(&fwd->addr, port); |
| 5762 | fwd->dscp = cfg_obj_getdscp(forwarder); |
| 5763 | if (fwd->dscp == -1) |
| 5764 | fwd->dscp = dscp; |
| 5765 | ISC_LINK_INIT(fwd, link); |
| 5766 | ISC_LIST_APPEND(fwdlist, fwd, link); |
| 5767 | } |
| 5768 | |
| 5769 | if (ISC_LIST_EMPTY(fwdlist)) { |
| 5770 | if (forwardtype != NULL) |
| 5771 | cfg_obj_log(forwardtype, named_g_lctx, ISC_LOG_WARNING, |
| 5772 | "no forwarders seen; disabling " |
| 5773 | "forwarding" ); |
| 5774 | fwdpolicy = dns_fwdpolicy_none; |
| 5775 | } else { |
| 5776 | if (forwardtype == NULL) { |
| 5777 | fwdpolicy = dns_fwdpolicy_first; |
| 5778 | } else { |
| 5779 | const char *forwardstr = cfg_obj_asstring(forwardtype); |
| 5780 | if (strcasecmp(forwardstr, "first" ) == 0) { |
| 5781 | fwdpolicy = dns_fwdpolicy_first; |
| 5782 | } else if (strcasecmp(forwardstr, "only" ) == 0) { |
| 5783 | fwdpolicy = dns_fwdpolicy_only; |
| 5784 | } else { |
| 5785 | INSIST(0); |
| 5786 | ISC_UNREACHABLE(); |
| 5787 | } |
| 5788 | } |
| 5789 | } |
| 5790 | |
| 5791 | result = dns_fwdtable_addfwd(view->fwdtable, origin, &fwdlist, |
| 5792 | fwdpolicy); |
| 5793 | if (result != ISC_R_SUCCESS) { |
| 5794 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 5795 | dns_name_format(origin, namebuf, sizeof(namebuf)); |
| 5796 | cfg_obj_log(forwarders, named_g_lctx, ISC_LOG_WARNING, |
| 5797 | "could not set up forwarding for domain '%s': %s" , |
| 5798 | namebuf, isc_result_totext(result)); |
| 5799 | goto cleanup; |
| 5800 | } |
| 5801 | |
| 5802 | result = ISC_R_SUCCESS; |
| 5803 | |
| 5804 | cleanup: |
| 5805 | |
| 5806 | while (!ISC_LIST_EMPTY(fwdlist)) { |
| 5807 | fwd = ISC_LIST_HEAD(fwdlist); |
| 5808 | ISC_LIST_UNLINK(fwdlist, fwd, link); |
| 5809 | isc_mem_put(view->mctx, fwd, sizeof(dns_forwarder_t)); |
| 5810 | } |
| 5811 | |
| 5812 | return (result); |
| 5813 | } |
| 5814 | |
| 5815 | static isc_result_t |
| 5816 | get_viewinfo(const cfg_obj_t *vconfig, const char **namep, |
| 5817 | dns_rdataclass_t *classp) |
| 5818 | { |
| 5819 | isc_result_t result = ISC_R_SUCCESS; |
| 5820 | const char *viewname; |
| 5821 | dns_rdataclass_t viewclass; |
| 5822 | |
| 5823 | REQUIRE(namep != NULL && *namep == NULL); |
| 5824 | REQUIRE(classp != NULL); |
| 5825 | |
| 5826 | if (vconfig != NULL) { |
| 5827 | const cfg_obj_t *classobj = NULL; |
| 5828 | |
| 5829 | viewname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name" )); |
| 5830 | classobj = cfg_tuple_get(vconfig, "class" ); |
| 5831 | CHECK(named_config_getclass(classobj, dns_rdataclass_in, |
| 5832 | &viewclass)); |
| 5833 | if (dns_rdataclass_ismeta(viewclass)) { |
| 5834 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 5835 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 5836 | "view '%s': class must not be meta" , |
| 5837 | viewname); |
| 5838 | CHECK(ISC_R_FAILURE); |
| 5839 | } |
| 5840 | } else { |
| 5841 | viewname = "_default" ; |
| 5842 | viewclass = dns_rdataclass_in; |
| 5843 | } |
| 5844 | |
| 5845 | *namep = viewname; |
| 5846 | *classp = viewclass; |
| 5847 | |
| 5848 | cleanup: |
| 5849 | return (result); |
| 5850 | } |
| 5851 | |
| 5852 | /* |
| 5853 | * Find a view based on its configuration info and attach to it. |
| 5854 | * |
| 5855 | * If 'vconfig' is NULL, attach to the default view. |
| 5856 | */ |
| 5857 | static isc_result_t |
| 5858 | find_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist, |
| 5859 | dns_view_t **viewp) |
| 5860 | { |
| 5861 | isc_result_t result; |
| 5862 | const char *viewname = NULL; |
| 5863 | dns_rdataclass_t viewclass; |
| 5864 | dns_view_t *view = NULL; |
| 5865 | |
| 5866 | result = get_viewinfo(vconfig, &viewname, &viewclass); |
| 5867 | if (result != ISC_R_SUCCESS) |
| 5868 | return (result); |
| 5869 | |
| 5870 | result = dns_viewlist_find(viewlist, viewname, viewclass, &view); |
| 5871 | if (result != ISC_R_SUCCESS) |
| 5872 | return (result); |
| 5873 | |
| 5874 | *viewp = view; |
| 5875 | return (ISC_R_SUCCESS); |
| 5876 | } |
| 5877 | |
| 5878 | /* |
| 5879 | * Create a new view and add it to the list. |
| 5880 | * |
| 5881 | * If 'vconfig' is NULL, create the default view. |
| 5882 | * |
| 5883 | * The view created is attached to '*viewp'. |
| 5884 | */ |
| 5885 | static isc_result_t |
| 5886 | create_view(const cfg_obj_t *vconfig, dns_viewlist_t *viewlist, |
| 5887 | dns_view_t **viewp) |
| 5888 | { |
| 5889 | isc_result_t result; |
| 5890 | const char *viewname = NULL; |
| 5891 | dns_rdataclass_t viewclass; |
| 5892 | dns_view_t *view = NULL; |
| 5893 | |
| 5894 | result = get_viewinfo(vconfig, &viewname, &viewclass); |
| 5895 | if (result != ISC_R_SUCCESS) |
| 5896 | return (result); |
| 5897 | |
| 5898 | result = dns_viewlist_find(viewlist, viewname, viewclass, &view); |
| 5899 | if (result == ISC_R_SUCCESS) |
| 5900 | return (ISC_R_EXISTS); |
| 5901 | if (result != ISC_R_NOTFOUND) |
| 5902 | return (result); |
| 5903 | INSIST(view == NULL); |
| 5904 | |
| 5905 | result = dns_view_create(named_g_mctx, viewclass, viewname, &view); |
| 5906 | if (result != ISC_R_SUCCESS) |
| 5907 | return (result); |
| 5908 | |
| 5909 | isc_nonce_buf(view->secret, sizeof(view->secret)); |
| 5910 | |
| 5911 | ISC_LIST_APPEND(*viewlist, view, link); |
| 5912 | dns_view_attach(view, viewp); |
| 5913 | return (ISC_R_SUCCESS); |
| 5914 | } |
| 5915 | |
| 5916 | /* |
| 5917 | * Configure or reconfigure a zone. |
| 5918 | */ |
| 5919 | static isc_result_t |
| 5920 | configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig, |
| 5921 | const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view, |
| 5922 | dns_viewlist_t *viewlist, cfg_aclconfctx_t *aclconf, |
| 5923 | bool added, bool old_rpz_ok, |
| 5924 | bool modify) |
| 5925 | { |
| 5926 | dns_view_t *pview = NULL; /* Production view */ |
| 5927 | dns_zone_t *zone = NULL; /* New or reused zone */ |
| 5928 | dns_zone_t *raw = NULL; /* New or reused raw zone */ |
| 5929 | dns_zone_t *dupzone = NULL; |
| 5930 | const cfg_obj_t *options = NULL; |
| 5931 | const cfg_obj_t *zoptions = NULL; |
| 5932 | const cfg_obj_t *typeobj = NULL; |
| 5933 | const cfg_obj_t *forwarders = NULL; |
| 5934 | const cfg_obj_t *forwardtype = NULL; |
| 5935 | const cfg_obj_t *ixfrfromdiffs = NULL; |
| 5936 | const cfg_obj_t *only = NULL; |
| 5937 | const cfg_obj_t *signing = NULL; |
| 5938 | const cfg_obj_t *viewobj = NULL; |
| 5939 | isc_result_t result; |
| 5940 | isc_result_t tresult; |
| 5941 | isc_buffer_t buffer; |
| 5942 | dns_fixedname_t fixorigin; |
| 5943 | dns_name_t *origin; |
| 5944 | const char *zname; |
| 5945 | dns_rdataclass_t zclass; |
| 5946 | const char *ztypestr; |
| 5947 | dns_rpz_num_t rpz_num; |
| 5948 | bool zone_is_catz = false; |
| 5949 | |
| 5950 | options = NULL; |
| 5951 | (void)cfg_map_get(config, "options" , &options); |
| 5952 | |
| 5953 | zoptions = cfg_tuple_get(zconfig, "options" ); |
| 5954 | |
| 5955 | /* |
| 5956 | * Get the zone origin as a dns_name_t. |
| 5957 | */ |
| 5958 | zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name" )); |
| 5959 | isc_buffer_constinit(&buffer, zname, strlen(zname)); |
| 5960 | isc_buffer_add(&buffer, strlen(zname)); |
| 5961 | dns_fixedname_init(&fixorigin); |
| 5962 | CHECK(dns_name_fromtext(dns_fixedname_name(&fixorigin), |
| 5963 | &buffer, dns_rootname, 0, NULL)); |
| 5964 | origin = dns_fixedname_name(&fixorigin); |
| 5965 | |
| 5966 | CHECK(named_config_getclass(cfg_tuple_get(zconfig, "class" ), |
| 5967 | view->rdclass, &zclass)); |
| 5968 | if (zclass != view->rdclass) { |
| 5969 | const char *vname = NULL; |
| 5970 | if (vconfig != NULL) |
| 5971 | vname = cfg_obj_asstring(cfg_tuple_get(vconfig, |
| 5972 | "name" )); |
| 5973 | else |
| 5974 | vname = "<default view>" ; |
| 5975 | |
| 5976 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 5977 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 5978 | "zone '%s': wrong class for view '%s'" , |
| 5979 | zname, vname); |
| 5980 | result = ISC_R_FAILURE; |
| 5981 | goto cleanup; |
| 5982 | } |
| 5983 | |
| 5984 | (void)cfg_map_get(zoptions, "in-view" , &viewobj); |
| 5985 | if (viewobj != NULL) { |
| 5986 | const char *inview = cfg_obj_asstring(viewobj); |
| 5987 | dns_view_t *otherview = NULL; |
| 5988 | |
| 5989 | if (viewlist == NULL) { |
| 5990 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 5991 | "'in-view' option is not permitted in " |
| 5992 | "dynamically added zones" ); |
| 5993 | result = ISC_R_FAILURE; |
| 5994 | goto cleanup; |
| 5995 | } |
| 5996 | |
| 5997 | result = dns_viewlist_find(viewlist, inview, view->rdclass, |
| 5998 | &otherview); |
| 5999 | if (result != ISC_R_SUCCESS) { |
| 6000 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 6001 | "view '%s' is not yet defined." , inview); |
| 6002 | result = ISC_R_FAILURE; |
| 6003 | goto cleanup; |
| 6004 | } |
| 6005 | |
| 6006 | result = dns_view_findzone(otherview, origin, &zone); |
| 6007 | dns_view_detach(&otherview); |
| 6008 | if (result != ISC_R_SUCCESS) { |
| 6009 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 6010 | "zone '%s' not defined in view '%s'" , |
| 6011 | zname, inview); |
| 6012 | result = ISC_R_FAILURE; |
| 6013 | goto cleanup; |
| 6014 | } |
| 6015 | |
| 6016 | CHECK(dns_view_addzone(view, zone)); |
| 6017 | dns_zone_detach(&zone); |
| 6018 | |
| 6019 | /* |
| 6020 | * If the zone contains a 'forwarders' statement, configure |
| 6021 | * selective forwarding. Note: this is not inherited from the |
| 6022 | * other view. |
| 6023 | */ |
| 6024 | forwarders = NULL; |
| 6025 | result = cfg_map_get(zoptions, "forwarders" , &forwarders); |
| 6026 | if (result == ISC_R_SUCCESS) { |
| 6027 | forwardtype = NULL; |
| 6028 | (void)cfg_map_get(zoptions, "forward" , &forwardtype); |
| 6029 | CHECK(configure_forward(config, view, origin, |
| 6030 | forwarders, forwardtype)); |
| 6031 | } |
| 6032 | result = ISC_R_SUCCESS; |
| 6033 | goto cleanup; |
| 6034 | } |
| 6035 | |
| 6036 | (void)cfg_map_get(zoptions, "type" , &typeobj); |
| 6037 | if (typeobj == NULL) { |
| 6038 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 6039 | "zone '%s' 'type' not specified" , zname); |
| 6040 | result = ISC_R_FAILURE; |
| 6041 | goto cleanup; |
| 6042 | } |
| 6043 | ztypestr = cfg_obj_asstring(typeobj); |
| 6044 | |
| 6045 | /* |
| 6046 | * "hints zones" aren't zones. If we've got one, |
| 6047 | * configure it and return. |
| 6048 | */ |
| 6049 | if (strcasecmp(ztypestr, "hint" ) == 0) { |
| 6050 | const cfg_obj_t *fileobj = NULL; |
| 6051 | if (cfg_map_get(zoptions, "file" , &fileobj) != ISC_R_SUCCESS) { |
| 6052 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6053 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 6054 | "zone '%s': 'file' not specified" , |
| 6055 | zname); |
| 6056 | result = ISC_R_FAILURE; |
| 6057 | goto cleanup; |
| 6058 | } |
| 6059 | if (dns_name_equal(origin, dns_rootname)) { |
| 6060 | const char *hintsfile = cfg_obj_asstring(fileobj); |
| 6061 | |
| 6062 | CHECK(configure_hints(view, hintsfile)); |
| 6063 | |
| 6064 | /* |
| 6065 | * Hint zones may also refer to delegation only points. |
| 6066 | */ |
| 6067 | only = NULL; |
| 6068 | tresult = cfg_map_get(zoptions, "delegation-only" , |
| 6069 | &only); |
| 6070 | if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only)) |
| 6071 | CHECK(dns_view_adddelegationonly(view, origin)); |
| 6072 | } else { |
| 6073 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6074 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 6075 | "ignoring non-root hint zone '%s'" , |
| 6076 | zname); |
| 6077 | result = ISC_R_SUCCESS; |
| 6078 | } |
| 6079 | /* Skip ordinary zone processing. */ |
| 6080 | goto cleanup; |
| 6081 | } |
| 6082 | |
| 6083 | /* |
| 6084 | * "forward zones" aren't zones either. Translate this syntax into |
| 6085 | * the appropriate selective forwarding configuration and return. |
| 6086 | */ |
| 6087 | if (strcasecmp(ztypestr, "forward" ) == 0) { |
| 6088 | forwardtype = NULL; |
| 6089 | forwarders = NULL; |
| 6090 | |
| 6091 | (void)cfg_map_get(zoptions, "forward" , &forwardtype); |
| 6092 | (void)cfg_map_get(zoptions, "forwarders" , &forwarders); |
| 6093 | CHECK(configure_forward(config, view, origin, forwarders, |
| 6094 | forwardtype)); |
| 6095 | |
| 6096 | /* |
| 6097 | * Forward zones may also set delegation only. |
| 6098 | */ |
| 6099 | only = NULL; |
| 6100 | tresult = cfg_map_get(zoptions, "delegation-only" , &only); |
| 6101 | if (tresult == ISC_R_SUCCESS && cfg_obj_asboolean(only)) |
| 6102 | CHECK(dns_view_adddelegationonly(view, origin)); |
| 6103 | goto cleanup; |
| 6104 | } |
| 6105 | |
| 6106 | /* |
| 6107 | * "delegation-only zones" aren't zones either. |
| 6108 | */ |
| 6109 | if (strcasecmp(ztypestr, "delegation-only" ) == 0) { |
| 6110 | result = dns_view_adddelegationonly(view, origin); |
| 6111 | goto cleanup; |
| 6112 | } |
| 6113 | |
| 6114 | /* |
| 6115 | * Redirect zones only require minimal configuration. |
| 6116 | */ |
| 6117 | if (strcasecmp(ztypestr, "redirect" ) == 0) { |
| 6118 | if (view->redirect != NULL) { |
| 6119 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 6120 | "redirect zone already exists" ); |
| 6121 | result = ISC_R_EXISTS; |
| 6122 | goto cleanup; |
| 6123 | } |
| 6124 | result = dns_viewlist_find(viewlist, view->name, |
| 6125 | view->rdclass, &pview); |
| 6126 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) |
| 6127 | goto cleanup; |
| 6128 | if (pview != NULL && pview->redirect != NULL) { |
| 6129 | dns_zone_attach(pview->redirect, &zone); |
| 6130 | dns_zone_setview(zone, view); |
| 6131 | } else { |
| 6132 | CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, |
| 6133 | &zone)); |
| 6134 | CHECK(dns_zone_setorigin(zone, origin)); |
| 6135 | dns_zone_setview(zone, view); |
| 6136 | CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, |
| 6137 | zone)); |
| 6138 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 6139 | } |
| 6140 | CHECK(named_zone_configure(config, vconfig, zconfig, |
| 6141 | aclconf, zone, NULL)); |
| 6142 | dns_zone_attach(zone, &view->redirect); |
| 6143 | goto cleanup; |
| 6144 | } |
| 6145 | |
| 6146 | if (!modify) { |
| 6147 | /* |
| 6148 | * Check for duplicates in the new zone table. |
| 6149 | */ |
| 6150 | result = dns_view_findzone(view, origin, &dupzone); |
| 6151 | if (result == ISC_R_SUCCESS) { |
| 6152 | /* |
| 6153 | * We already have this zone! |
| 6154 | */ |
| 6155 | cfg_obj_log(zconfig, named_g_lctx, ISC_LOG_ERROR, |
| 6156 | "zone '%s' already exists" , zname); |
| 6157 | dns_zone_detach(&dupzone); |
| 6158 | result = ISC_R_EXISTS; |
| 6159 | goto cleanup; |
| 6160 | } |
| 6161 | INSIST(dupzone == NULL); |
| 6162 | } |
| 6163 | |
| 6164 | /* |
| 6165 | * Note whether this is a response policy zone and which one if so, |
| 6166 | * unless we are using RPZ service interface. In that case, the |
| 6167 | * BIND zone database has nothing to do with rpz and so we don't care. |
| 6168 | */ |
| 6169 | for (rpz_num = 0; ; ++rpz_num) { |
| 6170 | if (view->rpzs == NULL || rpz_num >= view->rpzs->p.num_zones || |
| 6171 | view->rpzs->p.dnsrps_enabled) |
| 6172 | { |
| 6173 | rpz_num = DNS_RPZ_INVALID_NUM; |
| 6174 | break; |
| 6175 | } |
| 6176 | if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin, origin)) |
| 6177 | break; |
| 6178 | } |
| 6179 | |
| 6180 | if (view->catzs != NULL && |
| 6181 | dns_catz_get_zone(view->catzs, origin) != NULL) |
| 6182 | zone_is_catz = true; |
| 6183 | |
| 6184 | /* |
| 6185 | * See if we can reuse an existing zone. This is |
| 6186 | * only possible if all of these are true: |
| 6187 | * - The zone's view exists |
| 6188 | * - A zone with the right name exists in the view |
| 6189 | * - The zone is compatible with the config |
| 6190 | * options (e.g., an existing master zone cannot |
| 6191 | * be reused if the options specify a slave zone) |
| 6192 | * - The zone was not and is still not a response policy zone |
| 6193 | * or the zone is a policy zone with an unchanged number |
| 6194 | * and we are using the old policy zone summary data. |
| 6195 | */ |
| 6196 | result = dns_viewlist_find(&named_g_server->viewlist, view->name, |
| 6197 | view->rdclass, &pview); |
| 6198 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) |
| 6199 | goto cleanup; |
| 6200 | if (pview != NULL) |
| 6201 | result = dns_view_findzone(pview, origin, &zone); |
| 6202 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) |
| 6203 | goto cleanup; |
| 6204 | |
| 6205 | if (zone != NULL && !named_zone_reusable(zone, zconfig)) |
| 6206 | dns_zone_detach(&zone); |
| 6207 | |
| 6208 | if (zone != NULL && (rpz_num != dns_zone_get_rpz_num(zone) || |
| 6209 | (rpz_num != DNS_RPZ_INVALID_NUM && !old_rpz_ok))) |
| 6210 | dns_zone_detach(&zone); |
| 6211 | |
| 6212 | if (zone != NULL) { |
| 6213 | /* |
| 6214 | * We found a reusable zone. Make it use the |
| 6215 | * new view. |
| 6216 | */ |
| 6217 | dns_zone_setview(zone, view); |
| 6218 | } else { |
| 6219 | /* |
| 6220 | * We cannot reuse an existing zone, we have |
| 6221 | * to create a new one. |
| 6222 | */ |
| 6223 | CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone)); |
| 6224 | CHECK(dns_zone_setorigin(zone, origin)); |
| 6225 | dns_zone_setview(zone, view); |
| 6226 | CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone)); |
| 6227 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 6228 | } |
| 6229 | if (rpz_num != DNS_RPZ_INVALID_NUM) { |
| 6230 | result = dns_zone_rpz_enable(zone, view->rpzs, rpz_num); |
| 6231 | if (result != ISC_R_SUCCESS) { |
| 6232 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6233 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 6234 | "zone '%s': incompatible" |
| 6235 | " masterfile-format or database" |
| 6236 | " for a response policy zone" , |
| 6237 | zname); |
| 6238 | goto cleanup; |
| 6239 | } |
| 6240 | } |
| 6241 | |
| 6242 | if (zone_is_catz) |
| 6243 | dns_zone_catz_enable(zone, view->catzs); |
| 6244 | |
| 6245 | /* |
| 6246 | * If the zone contains a 'forwarders' statement, configure |
| 6247 | * selective forwarding. |
| 6248 | */ |
| 6249 | forwarders = NULL; |
| 6250 | if (cfg_map_get(zoptions, "forwarders" , &forwarders) == ISC_R_SUCCESS) |
| 6251 | { |
| 6252 | forwardtype = NULL; |
| 6253 | (void)cfg_map_get(zoptions, "forward" , &forwardtype); |
| 6254 | CHECK(configure_forward(config, view, origin, forwarders, |
| 6255 | forwardtype)); |
| 6256 | } |
| 6257 | |
| 6258 | /* |
| 6259 | * Stub and forward zones may also refer to delegation only points. |
| 6260 | */ |
| 6261 | only = NULL; |
| 6262 | if (cfg_map_get(zoptions, "delegation-only" , &only) == ISC_R_SUCCESS) |
| 6263 | { |
| 6264 | if (cfg_obj_asboolean(only)) |
| 6265 | CHECK(dns_view_adddelegationonly(view, origin)); |
| 6266 | } |
| 6267 | |
| 6268 | /* |
| 6269 | * Mark whether the zone was originally added at runtime or not |
| 6270 | */ |
| 6271 | dns_zone_setadded(zone, added); |
| 6272 | |
| 6273 | signing = NULL; |
| 6274 | if ((strcasecmp(ztypestr, "primary" ) == 0 || |
| 6275 | strcasecmp(ztypestr, "master" ) == 0 || |
| 6276 | strcasecmp(ztypestr, "secondary" ) == 0 || |
| 6277 | strcasecmp(ztypestr, "slave" ) == 0) && |
| 6278 | cfg_map_get(zoptions, "inline-signing" , &signing) == ISC_R_SUCCESS && |
| 6279 | cfg_obj_asboolean(signing)) |
| 6280 | { |
| 6281 | dns_zone_getraw(zone, &raw); |
| 6282 | if (raw == NULL) { |
| 6283 | CHECK(dns_zone_create(&raw, mctx)); |
| 6284 | CHECK(dns_zone_setorigin(raw, origin)); |
| 6285 | dns_zone_setview(raw, view); |
| 6286 | dns_zone_setstats(raw, named_g_server->zonestats); |
| 6287 | CHECK(dns_zone_link(zone, raw)); |
| 6288 | } |
| 6289 | if (cfg_map_get(zoptions, "ixfr-from-differences" , |
| 6290 | &ixfrfromdiffs) == ISC_R_SUCCESS) |
| 6291 | { |
| 6292 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6293 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 6294 | "zone '%s': 'ixfr-from-differences' is " |
| 6295 | "ignored for inline-signed zones" , |
| 6296 | zname); |
| 6297 | } |
| 6298 | } |
| 6299 | |
| 6300 | /* |
| 6301 | * Configure the zone. |
| 6302 | */ |
| 6303 | CHECK(named_zone_configure(config, vconfig, zconfig, |
| 6304 | aclconf, zone, raw)); |
| 6305 | |
| 6306 | /* |
| 6307 | * Add the zone to its view in the new view list. |
| 6308 | */ |
| 6309 | if (!modify) |
| 6310 | CHECK(dns_view_addzone(view, zone)); |
| 6311 | |
| 6312 | if (zone_is_catz) { |
| 6313 | /* |
| 6314 | * force catz reload if the zone is loaded; |
| 6315 | * if it's not it'll get reloaded on zone load |
| 6316 | */ |
| 6317 | dns_db_t *db = NULL; |
| 6318 | |
| 6319 | tresult = dns_zone_getdb(zone, &db); |
| 6320 | if (tresult == ISC_R_SUCCESS) { |
| 6321 | dns_catz_dbupdate_callback(db, view->catzs); |
| 6322 | dns_db_detach(&db); |
| 6323 | } |
| 6324 | |
| 6325 | } |
| 6326 | |
| 6327 | /* |
| 6328 | * Ensure that zone keys are reloaded on reconfig |
| 6329 | */ |
| 6330 | if ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_MAINTAIN) != 0) |
| 6331 | dns_zone_rekey(zone, false); |
| 6332 | |
| 6333 | cleanup: |
| 6334 | if (zone != NULL) |
| 6335 | dns_zone_detach(&zone); |
| 6336 | if (raw != NULL) |
| 6337 | dns_zone_detach(&raw); |
| 6338 | if (pview != NULL) |
| 6339 | dns_view_detach(&pview); |
| 6340 | |
| 6341 | return (result); |
| 6342 | } |
| 6343 | |
| 6344 | /* |
| 6345 | * Configure built-in zone for storing managed-key data. |
| 6346 | */ |
| 6347 | static isc_result_t |
| 6348 | add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx) { |
| 6349 | isc_result_t result; |
| 6350 | dns_view_t *pview = NULL; |
| 6351 | dns_zone_t *zone = NULL; |
| 6352 | dns_acl_t *none = NULL; |
| 6353 | char filename[PATH_MAX]; |
| 6354 | bool defaultview; |
| 6355 | |
| 6356 | REQUIRE(view != NULL); |
| 6357 | |
| 6358 | /* See if we can re-use an existing keydata zone. */ |
| 6359 | result = dns_viewlist_find(&named_g_server->viewlist, |
| 6360 | view->name, view->rdclass, &pview); |
| 6361 | if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS) { |
| 6362 | return (result); |
| 6363 | } |
| 6364 | |
| 6365 | if (pview != NULL) { |
| 6366 | if (pview->managed_keys != NULL) { |
| 6367 | dns_zone_attach(pview->managed_keys, |
| 6368 | &view->managed_keys); |
| 6369 | dns_zone_setview(pview->managed_keys, view); |
| 6370 | dns_view_detach(&pview); |
| 6371 | dns_zone_synckeyzone(view->managed_keys); |
| 6372 | return (ISC_R_SUCCESS); |
| 6373 | } |
| 6374 | |
| 6375 | dns_view_detach(&pview); |
| 6376 | } |
| 6377 | |
| 6378 | /* No existing keydata zone was found; create one */ |
| 6379 | CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone)); |
| 6380 | CHECK(dns_zone_setorigin(zone, dns_rootname)); |
| 6381 | |
| 6382 | defaultview = (strcmp(view->name, "_default" ) == 0); |
| 6383 | CHECK(isc_file_sanitize(directory, |
| 6384 | defaultview ? "managed-keys" : view->name, |
| 6385 | defaultview ? "bind" : "mkeys" , |
| 6386 | filename, sizeof(filename))); |
| 6387 | CHECK(dns_zone_setfile(zone, filename, dns_masterformat_text, |
| 6388 | &dns_master_style_default)); |
| 6389 | |
| 6390 | dns_zone_setview(zone, view); |
| 6391 | dns_zone_settype(zone, dns_zone_key); |
| 6392 | dns_zone_setclass(zone, view->rdclass); |
| 6393 | |
| 6394 | CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone)); |
| 6395 | |
| 6396 | CHECK(dns_acl_none(mctx, &none)); |
| 6397 | dns_zone_setqueryacl(zone, none); |
| 6398 | dns_zone_setqueryonacl(zone, none); |
| 6399 | dns_acl_detach(&none); |
| 6400 | |
| 6401 | dns_zone_setdialup(zone, dns_dialuptype_no); |
| 6402 | dns_zone_setnotifytype(zone, dns_notifytype_no); |
| 6403 | dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true); |
| 6404 | dns_zone_setjournalsize(zone, 0); |
| 6405 | |
| 6406 | dns_zone_setstats(zone, named_g_server->zonestats); |
| 6407 | CHECK(setquerystats(zone, mctx, dns_zonestat_none)); |
| 6408 | |
| 6409 | if (view->managed_keys != NULL) { |
| 6410 | dns_zone_detach(&view->managed_keys); |
| 6411 | } |
| 6412 | dns_zone_attach(zone, &view->managed_keys); |
| 6413 | |
| 6414 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6415 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 6416 | "set up managed keys zone for view %s, file '%s'" , |
| 6417 | view->name, filename); |
| 6418 | |
| 6419 | cleanup: |
| 6420 | if (zone != NULL) { |
| 6421 | dns_zone_detach(&zone); |
| 6422 | } |
| 6423 | if (none != NULL) { |
| 6424 | dns_acl_detach(&none); |
| 6425 | } |
| 6426 | |
| 6427 | return (result); |
| 6428 | } |
| 6429 | |
| 6430 | /* |
| 6431 | * Configure a single server quota. |
| 6432 | */ |
| 6433 | static void |
| 6434 | configure_server_quota(const cfg_obj_t **maps, const char *name, |
| 6435 | isc_quota_t *quota) |
| 6436 | { |
| 6437 | const cfg_obj_t *obj = NULL; |
| 6438 | isc_result_t result; |
| 6439 | |
| 6440 | result = named_config_get(maps, name, &obj); |
| 6441 | INSIST(result == ISC_R_SUCCESS); |
| 6442 | isc_quota_max(quota, cfg_obj_asuint32(obj)); |
| 6443 | } |
| 6444 | |
| 6445 | /* |
| 6446 | * This function is called as soon as the 'directory' statement has been |
| 6447 | * parsed. This can be extended to support other options if necessary. |
| 6448 | */ |
| 6449 | static isc_result_t |
| 6450 | directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) { |
| 6451 | isc_result_t result; |
| 6452 | const char *directory; |
| 6453 | |
| 6454 | REQUIRE(strcasecmp("directory" , clausename) == 0); |
| 6455 | |
| 6456 | UNUSED(arg); |
| 6457 | UNUSED(clausename); |
| 6458 | |
| 6459 | /* |
| 6460 | * Change directory. |
| 6461 | */ |
| 6462 | directory = cfg_obj_asstring(obj); |
| 6463 | |
| 6464 | if (! isc_file_ischdiridempotent(directory)) |
| 6465 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 6466 | "option 'directory' contains relative path '%s'" , |
| 6467 | directory); |
| 6468 | |
| 6469 | #if 0 |
| 6470 | if (!isc_file_isdirwritable(directory)) { |
| 6471 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6472 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 6473 | "directory '%s' is not writable" , |
| 6474 | directory); |
| 6475 | return (ISC_R_NOPERM); |
| 6476 | } |
| 6477 | #endif |
| 6478 | |
| 6479 | result = isc_dir_chdir(directory); |
| 6480 | if (result != ISC_R_SUCCESS) { |
| 6481 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, |
| 6482 | "change directory to '%s' failed: %s" , |
| 6483 | directory, isc_result_totext(result)); |
| 6484 | return (result); |
| 6485 | } |
| 6486 | |
| 6487 | return (ISC_R_SUCCESS); |
| 6488 | } |
| 6489 | |
| 6490 | static isc_result_t |
| 6491 | add_listenelt(isc_mem_t *mctx, ns_listenlist_t *list, isc_sockaddr_t *addr, |
| 6492 | isc_dscp_t dscp, bool wcardport_ok) |
| 6493 | { |
| 6494 | ns_listenelt_t *lelt = NULL; |
| 6495 | dns_acl_t *src_acl = NULL; |
| 6496 | isc_result_t result; |
| 6497 | isc_sockaddr_t any_sa6; |
| 6498 | isc_netaddr_t netaddr; |
| 6499 | |
| 6500 | REQUIRE(isc_sockaddr_pf(addr) == AF_INET6); |
| 6501 | |
| 6502 | isc_sockaddr_any6(&any_sa6); |
| 6503 | if (!isc_sockaddr_equal(&any_sa6, addr) && |
| 6504 | (wcardport_ok || isc_sockaddr_getport(addr) != 0)) { |
| 6505 | isc_netaddr_fromin6(&netaddr, &addr->type.sin6.sin6_addr); |
| 6506 | |
| 6507 | result = dns_acl_create(mctx, 0, &src_acl); |
| 6508 | if (result != ISC_R_SUCCESS) |
| 6509 | return (result); |
| 6510 | |
| 6511 | result = dns_iptable_addprefix(src_acl->iptable, &netaddr, |
| 6512 | 128, true); |
| 6513 | if (result != ISC_R_SUCCESS) |
| 6514 | goto clean; |
| 6515 | |
| 6516 | result = ns_listenelt_create(mctx, isc_sockaddr_getport(addr), |
| 6517 | dscp, src_acl, &lelt); |
| 6518 | if (result != ISC_R_SUCCESS) |
| 6519 | goto clean; |
| 6520 | ISC_LIST_APPEND(list->elts, lelt, link); |
| 6521 | } |
| 6522 | |
| 6523 | return (ISC_R_SUCCESS); |
| 6524 | |
| 6525 | clean: |
| 6526 | INSIST(lelt == NULL); |
| 6527 | dns_acl_detach(&src_acl); |
| 6528 | |
| 6529 | return (result); |
| 6530 | } |
| 6531 | |
| 6532 | /* |
| 6533 | * Make a list of xxx-source addresses and call ns_interfacemgr_adjust() |
| 6534 | * to update the listening interfaces accordingly. |
| 6535 | * We currently only consider IPv6, because this only affects IPv6 wildcard |
| 6536 | * sockets. |
| 6537 | */ |
| 6538 | static void |
| 6539 | adjust_interfaces(named_server_t *server, isc_mem_t *mctx) { |
| 6540 | isc_result_t result; |
| 6541 | ns_listenlist_t *list = NULL; |
| 6542 | dns_view_t *view; |
| 6543 | dns_zone_t *zone, *next; |
| 6544 | isc_sockaddr_t addr, *addrp; |
| 6545 | isc_dscp_t dscp = -1; |
| 6546 | |
| 6547 | result = ns_listenlist_create(mctx, &list); |
| 6548 | if (result != ISC_R_SUCCESS) |
| 6549 | return; |
| 6550 | |
| 6551 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 6552 | view != NULL; |
| 6553 | view = ISC_LIST_NEXT(view, link)) { |
| 6554 | dns_dispatch_t *dispatch6; |
| 6555 | |
| 6556 | dispatch6 = dns_resolver_dispatchv6(view->resolver); |
| 6557 | if (dispatch6 == NULL) |
| 6558 | continue; |
| 6559 | result = dns_dispatch_getlocaladdress(dispatch6, &addr); |
| 6560 | if (result != ISC_R_SUCCESS) |
| 6561 | goto fail; |
| 6562 | |
| 6563 | /* |
| 6564 | * We always add non-wildcard address regardless of whether |
| 6565 | * the port is 'any' (the fourth arg is TRUE): if the port is |
| 6566 | * specific, we need to add it since it may conflict with a |
| 6567 | * listening interface; if it's zero, we'll dynamically open |
| 6568 | * query ports, and some of them may override an existing |
| 6569 | * wildcard IPv6 port. |
| 6570 | */ |
| 6571 | /* XXXMPA fix dscp */ |
| 6572 | result = add_listenelt(mctx, list, &addr, dscp, true); |
| 6573 | if (result != ISC_R_SUCCESS) |
| 6574 | goto fail; |
| 6575 | } |
| 6576 | |
| 6577 | zone = NULL; |
| 6578 | for (result = dns_zone_first(server->zonemgr, &zone); |
| 6579 | result == ISC_R_SUCCESS; |
| 6580 | next = NULL, result = dns_zone_next(zone, &next), zone = next) { |
| 6581 | dns_view_t *zoneview; |
| 6582 | |
| 6583 | /* |
| 6584 | * At this point the zone list may contain a stale zone |
| 6585 | * just removed from the configuration. To see the validity, |
| 6586 | * check if the corresponding view is in our current view list. |
| 6587 | * There may also be old zones that are still in the process |
| 6588 | * of shutting down and have detached from their old view |
| 6589 | * (zoneview == NULL). |
| 6590 | */ |
| 6591 | zoneview = dns_zone_getview(zone); |
| 6592 | if (zoneview == NULL) |
| 6593 | continue; |
| 6594 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 6595 | view != NULL && view != zoneview; |
| 6596 | view = ISC_LIST_NEXT(view, link)) |
| 6597 | ; |
| 6598 | if (view == NULL) |
| 6599 | continue; |
| 6600 | |
| 6601 | addrp = dns_zone_getnotifysrc6(zone); |
| 6602 | dscp = dns_zone_getnotifysrc6dscp(zone); |
| 6603 | result = add_listenelt(mctx, list, addrp, dscp, false); |
| 6604 | if (result != ISC_R_SUCCESS) |
| 6605 | goto fail; |
| 6606 | |
| 6607 | addrp = dns_zone_getxfrsource6(zone); |
| 6608 | dscp = dns_zone_getxfrsource6dscp(zone); |
| 6609 | result = add_listenelt(mctx, list, addrp, dscp, false); |
| 6610 | if (result != ISC_R_SUCCESS) |
| 6611 | goto fail; |
| 6612 | } |
| 6613 | |
| 6614 | ns_interfacemgr_adjust(server->interfacemgr, list, true); |
| 6615 | |
| 6616 | clean: |
| 6617 | ns_listenlist_detach(&list); |
| 6618 | return; |
| 6619 | |
| 6620 | fail: |
| 6621 | /* |
| 6622 | * Even when we failed the procedure, most of other interfaces |
| 6623 | * should work correctly. We therefore just warn it. |
| 6624 | */ |
| 6625 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6626 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 6627 | "could not adjust the listen-on list; " |
| 6628 | "some interfaces may not work" ); |
| 6629 | goto clean; |
| 6630 | } |
| 6631 | |
| 6632 | /* |
| 6633 | * This event callback is invoked to do periodic network interface |
| 6634 | * scanning. |
| 6635 | */ |
| 6636 | |
| 6637 | static void |
| 6638 | interface_timer_tick(isc_task_t *task, isc_event_t *event) { |
| 6639 | named_server_t *server = (named_server_t *) event->ev_arg; |
| 6640 | INSIST(task == server->task); |
| 6641 | UNUSED(task); |
| 6642 | |
| 6643 | isc_event_free(&event); |
| 6644 | ns_interfacemgr_scan(server->interfacemgr, false); |
| 6645 | } |
| 6646 | |
| 6647 | static void |
| 6648 | heartbeat_timer_tick(isc_task_t *task, isc_event_t *event) { |
| 6649 | named_server_t *server = (named_server_t *) event->ev_arg; |
| 6650 | dns_view_t *view; |
| 6651 | |
| 6652 | UNUSED(task); |
| 6653 | isc_event_free(&event); |
| 6654 | view = ISC_LIST_HEAD(server->viewlist); |
| 6655 | while (view != NULL) { |
| 6656 | dns_view_dialup(view); |
| 6657 | view = ISC_LIST_NEXT(view, link); |
| 6658 | } |
| 6659 | } |
| 6660 | |
| 6661 | typedef struct { |
| 6662 | isc_mem_t *mctx; |
| 6663 | isc_task_t *task; |
| 6664 | dns_rdataset_t rdataset; |
| 6665 | dns_rdataset_t sigrdataset; |
| 6666 | dns_fetch_t *fetch; |
| 6667 | } ns_tat_t; |
| 6668 | |
| 6669 | static int |
| 6670 | cid(const void *a, const void *b) { |
| 6671 | const uint16_t ida = *(const uint16_t *)a; |
| 6672 | const uint16_t idb = *(const uint16_t *)b; |
| 6673 | if (ida < idb) |
| 6674 | return (-1); |
| 6675 | else if (ida > idb) |
| 6676 | return (1); |
| 6677 | else |
| 6678 | return (0); |
| 6679 | } |
| 6680 | |
| 6681 | static void |
| 6682 | tat_done(isc_task_t *task, isc_event_t *event) { |
| 6683 | dns_fetchevent_t *devent; |
| 6684 | ns_tat_t *tat; |
| 6685 | |
| 6686 | UNUSED(task); |
| 6687 | INSIST(event != NULL && event->ev_type == DNS_EVENT_FETCHDONE); |
| 6688 | INSIST(event->ev_arg != NULL); |
| 6689 | |
| 6690 | tat = event->ev_arg; |
| 6691 | devent = (dns_fetchevent_t *) event; |
| 6692 | |
| 6693 | /* Free resources which are not of interest */ |
| 6694 | if (devent->node != NULL) |
| 6695 | dns_db_detachnode(devent->db, &devent->node); |
| 6696 | if (devent->db != NULL) |
| 6697 | dns_db_detach(&devent->db); |
| 6698 | isc_event_free(&event); |
| 6699 | dns_resolver_destroyfetch(&tat->fetch); |
| 6700 | if (dns_rdataset_isassociated(&tat->rdataset)) |
| 6701 | dns_rdataset_disassociate(&tat->rdataset); |
| 6702 | if (dns_rdataset_isassociated(&tat->sigrdataset)) |
| 6703 | dns_rdataset_disassociate(&tat->sigrdataset); |
| 6704 | isc_task_detach(&tat->task); |
| 6705 | isc_mem_putanddetach(&tat->mctx, tat, sizeof(*tat)); |
| 6706 | } |
| 6707 | |
| 6708 | struct dotat_arg { |
| 6709 | dns_view_t *view; |
| 6710 | isc_task_t *task; |
| 6711 | }; |
| 6712 | |
| 6713 | /*% |
| 6714 | * Prepare the QNAME for the TAT query to be sent by processing the trust |
| 6715 | * anchors present at 'keynode' of 'keytable'. Store the result in 'dst' and |
| 6716 | * the domain name which 'keynode' is associated with in 'origin'. |
| 6717 | * |
| 6718 | * A maximum of 12 key IDs can be reported in a single TAT query due to the |
| 6719 | * 63-octet length limit for any single label in a domain name. If there are |
| 6720 | * more than 12 keys configured at 'keynode', only the first 12 will be |
| 6721 | * reported in the TAT query. |
| 6722 | */ |
| 6723 | static isc_result_t |
| 6724 | get_tat_qname(dns_name_t *dst, const dns_name_t **origin, |
| 6725 | dns_keytable_t *keytable, dns_keynode_t *keynode) |
| 6726 | { |
| 6727 | dns_keynode_t *firstnode = keynode; |
| 6728 | dns_keynode_t *nextnode; |
| 6729 | unsigned int i, n = 0; |
| 6730 | uint16_t ids[12]; |
| 6731 | isc_textregion_t r; |
| 6732 | char label[64]; |
| 6733 | int m; |
| 6734 | |
| 6735 | REQUIRE(origin != NULL && *origin == NULL); |
| 6736 | |
| 6737 | do { |
| 6738 | dst_key_t *key = dns_keynode_key(keynode); |
| 6739 | if (key != NULL) { |
| 6740 | *origin = dst_key_name(key); |
| 6741 | if (n < (sizeof(ids)/sizeof(ids[0]))) { |
| 6742 | ids[n] = dst_key_id(key); |
| 6743 | n++; |
| 6744 | } |
| 6745 | } |
| 6746 | nextnode = NULL; |
| 6747 | (void)dns_keytable_nextkeynode(keytable, keynode, &nextnode); |
| 6748 | if (keynode != firstnode) { |
| 6749 | dns_keytable_detachkeynode(keytable, &keynode); |
| 6750 | } |
| 6751 | keynode = nextnode; |
| 6752 | } while (keynode != NULL); |
| 6753 | |
| 6754 | if (n == 0) { |
| 6755 | return (DNS_R_EMPTYNAME); |
| 6756 | } |
| 6757 | |
| 6758 | if (n > 1) { |
| 6759 | qsort(ids, n, sizeof(ids[0]), cid); |
| 6760 | } |
| 6761 | |
| 6762 | /* |
| 6763 | * Encoded as "_ta-xxxx\(-xxxx\)*" where xxxx is the hex version of |
| 6764 | * of the keyid. |
| 6765 | */ |
| 6766 | label[0] = 0; |
| 6767 | r.base = label; |
| 6768 | r.length = sizeof(label); |
| 6769 | m = snprintf(r.base, r.length, "_ta" ); |
| 6770 | if (m < 0 || (unsigned)m > r.length) { |
| 6771 | return (ISC_R_FAILURE); |
| 6772 | } |
| 6773 | isc_textregion_consume(&r, m); |
| 6774 | for (i = 0; i < n; i++) { |
| 6775 | m = snprintf(r.base, r.length, "-%04x" , ids[i]); |
| 6776 | if (m < 0 || (unsigned)m > r.length) { |
| 6777 | return (ISC_R_FAILURE); |
| 6778 | } |
| 6779 | isc_textregion_consume(&r, m); |
| 6780 | } |
| 6781 | |
| 6782 | return (dns_name_fromstring2(dst, label, *origin, 0, NULL)); |
| 6783 | } |
| 6784 | |
| 6785 | static void |
| 6786 | dotat(dns_keytable_t *keytable, dns_keynode_t *keynode, void *arg) { |
| 6787 | struct dotat_arg *dotat_arg = arg; |
| 6788 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 6789 | const dns_name_t *origin = NULL; |
| 6790 | dns_fixedname_t fixed, fdomain; |
| 6791 | dns_name_t *tatname, *domain; |
| 6792 | dns_rdataset_t nameservers; |
| 6793 | isc_result_t result; |
| 6794 | dns_view_t *view; |
| 6795 | isc_task_t *task; |
| 6796 | ns_tat_t *tat; |
| 6797 | |
| 6798 | REQUIRE(keytable != NULL); |
| 6799 | REQUIRE(keynode != NULL); |
| 6800 | REQUIRE(arg != NULL); |
| 6801 | |
| 6802 | view = dotat_arg->view; |
| 6803 | task = dotat_arg->task; |
| 6804 | |
| 6805 | tatname = dns_fixedname_initname(&fixed); |
| 6806 | result = get_tat_qname(tatname, &origin, keytable, keynode); |
| 6807 | if (result != ISC_R_SUCCESS) { |
| 6808 | return; |
| 6809 | } |
| 6810 | |
| 6811 | dns_name_format(tatname, namebuf, sizeof(namebuf)); |
| 6812 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 6813 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 6814 | "%s: sending trust-anchor-telemetry query '%s/NULL'" , |
| 6815 | view->name, namebuf); |
| 6816 | |
| 6817 | tat = isc_mem_get(dotat_arg->view->mctx, sizeof(*tat)); |
| 6818 | if (tat == NULL) { |
| 6819 | return; |
| 6820 | } |
| 6821 | |
| 6822 | tat->mctx = NULL; |
| 6823 | tat->task = NULL; |
| 6824 | tat->fetch = NULL; |
| 6825 | dns_rdataset_init(&tat->rdataset); |
| 6826 | dns_rdataset_init(&tat->sigrdataset); |
| 6827 | isc_mem_attach(dotat_arg->view->mctx, &tat->mctx); |
| 6828 | isc_task_attach(task, &tat->task); |
| 6829 | |
| 6830 | /* |
| 6831 | * TAT queries should be sent to the authoritative servers for a given |
| 6832 | * zone. If this function is called for a keytable node corresponding |
| 6833 | * to a locally served zone, calling dns_resolver_createfetch() with |
| 6834 | * NULL 'domain' and 'nameservers' arguments will cause 'tatname' to be |
| 6835 | * resolved locally, without sending any TAT queries upstream. |
| 6836 | * |
| 6837 | * Work around this issue by calling dns_view_findzonecut() first. If |
| 6838 | * the zone is served locally, the NS RRset for the given domain name |
| 6839 | * will be retrieved from local data; if it is not, the deepest zone |
| 6840 | * cut we have for it will be retrieved from cache. In either case, |
| 6841 | * passing the results to dns_resolver_createfetch() will prevent it |
| 6842 | * from returning NXDOMAIN for 'tatname' while still allowing it to |
| 6843 | * chase down any potential delegations returned by upstream servers in |
| 6844 | * order to eventually find the destination host to send the TAT query |
| 6845 | * to. |
| 6846 | * |
| 6847 | * 'origin' holds the domain name at 'keynode', i.e. the domain name |
| 6848 | * for which the trust anchors to be reported by this TAT query are |
| 6849 | * defined. |
| 6850 | * |
| 6851 | * After the dns_view_findzonecut() call, 'domain' will hold the |
| 6852 | * deepest zone cut we can find for 'origin' while 'nameservers' will |
| 6853 | * hold the NS RRset at that zone cut. |
| 6854 | */ |
| 6855 | domain = dns_fixedname_initname(&fdomain); |
| 6856 | dns_rdataset_init(&nameservers); |
| 6857 | result = dns_view_findzonecut(view, origin, domain, NULL, 0, 0, |
| 6858 | true, true, &nameservers, NULL); |
| 6859 | if (result == ISC_R_SUCCESS) { |
| 6860 | result = dns_resolver_createfetch(view->resolver, tatname, |
| 6861 | dns_rdatatype_null, domain, |
| 6862 | &nameservers, NULL, NULL, 0, |
| 6863 | 0, 0, NULL, tat->task, |
| 6864 | tat_done, tat, |
| 6865 | &tat->rdataset, |
| 6866 | &tat->sigrdataset, |
| 6867 | &tat->fetch); |
| 6868 | } |
| 6869 | |
| 6870 | /* |
| 6871 | * 'domain' holds the dns_name_t pointer inside a dst_key_t structure. |
| 6872 | * dns_resolver_createfetch() creates its own copy of 'domain' if it |
| 6873 | * succeeds. Thus, 'domain' is not freed here. |
| 6874 | * |
| 6875 | * Even if dns_view_findzonecut() returned something else than |
| 6876 | * ISC_R_SUCCESS, it still could have associated 'nameservers'. |
| 6877 | * dns_resolver_createfetch() creates its own copy of 'nameservers' if |
| 6878 | * it succeeds. Thus, we need to check whether 'nameservers' is |
| 6879 | * associated and release it if it is. |
| 6880 | */ |
| 6881 | if (dns_rdataset_isassociated(&nameservers)) { |
| 6882 | dns_rdataset_disassociate(&nameservers); |
| 6883 | } |
| 6884 | |
| 6885 | if (result != ISC_R_SUCCESS) { |
| 6886 | isc_task_detach(&tat->task); |
| 6887 | isc_mem_putanddetach(&tat->mctx, tat, sizeof(*tat)); |
| 6888 | } |
| 6889 | } |
| 6890 | |
| 6891 | static void |
| 6892 | tat_timer_tick(isc_task_t *task, isc_event_t *event) { |
| 6893 | isc_result_t result; |
| 6894 | named_server_t *server = (named_server_t *) event->ev_arg; |
| 6895 | struct dotat_arg arg; |
| 6896 | dns_view_t *view; |
| 6897 | dns_keytable_t *secroots = NULL; |
| 6898 | |
| 6899 | isc_event_free(&event); |
| 6900 | |
| 6901 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 6902 | view != NULL; |
| 6903 | view = ISC_LIST_NEXT(view, link)) |
| 6904 | { |
| 6905 | if (!view->trust_anchor_telemetry || |
| 6906 | !view->enablevalidation) |
| 6907 | { |
| 6908 | continue; |
| 6909 | } |
| 6910 | |
| 6911 | result = dns_view_getsecroots(view, &secroots); |
| 6912 | if (result != ISC_R_SUCCESS) { |
| 6913 | continue; |
| 6914 | } |
| 6915 | |
| 6916 | arg.view = view; |
| 6917 | arg.task = task; |
| 6918 | (void)dns_keytable_forall(secroots, dotat, &arg); |
| 6919 | dns_keytable_detach(&secroots); |
| 6920 | } |
| 6921 | } |
| 6922 | |
| 6923 | static void |
| 6924 | pps_timer_tick(isc_task_t *task, isc_event_t *event) { |
| 6925 | static unsigned int oldrequests = 0; |
| 6926 | unsigned int requests = ns_client_requests; |
| 6927 | |
| 6928 | UNUSED(task); |
| 6929 | isc_event_free(&event); |
| 6930 | |
| 6931 | /* |
| 6932 | * Don't worry about wrapping as the overflow result will be right. |
| 6933 | */ |
| 6934 | dns_pps = (requests - oldrequests) / 1200; |
| 6935 | oldrequests = requests; |
| 6936 | } |
| 6937 | |
| 6938 | /* |
| 6939 | * Replace the current value of '*field', a dynamically allocated |
| 6940 | * string or NULL, with a dynamically allocated copy of the |
| 6941 | * null-terminated string pointed to by 'value', or NULL. |
| 6942 | */ |
| 6943 | static isc_result_t |
| 6944 | setstring(named_server_t *server, char **field, const char *value) { |
| 6945 | char *copy; |
| 6946 | |
| 6947 | if (value != NULL) { |
| 6948 | copy = isc_mem_strdup(server->mctx, value); |
| 6949 | if (copy == NULL) |
| 6950 | return (ISC_R_NOMEMORY); |
| 6951 | } else { |
| 6952 | copy = NULL; |
| 6953 | } |
| 6954 | |
| 6955 | if (*field != NULL) |
| 6956 | isc_mem_free(server->mctx, *field); |
| 6957 | |
| 6958 | *field = copy; |
| 6959 | return (ISC_R_SUCCESS); |
| 6960 | } |
| 6961 | |
| 6962 | /* |
| 6963 | * Replace the current value of '*field', a dynamically allocated |
| 6964 | * string or NULL, with another dynamically allocated string |
| 6965 | * or NULL if whether 'obj' is a string or void value, respectively. |
| 6966 | */ |
| 6967 | static isc_result_t |
| 6968 | setoptstring(named_server_t *server, char **field, const cfg_obj_t *obj) { |
| 6969 | if (cfg_obj_isvoid(obj)) |
| 6970 | return (setstring(server, field, NULL)); |
| 6971 | else |
| 6972 | return (setstring(server, field, cfg_obj_asstring(obj))); |
| 6973 | } |
| 6974 | |
| 6975 | static void |
| 6976 | set_limit(const cfg_obj_t **maps, const char *configname, |
| 6977 | const char *description, isc_resource_t resourceid, |
| 6978 | isc_resourcevalue_t defaultvalue) |
| 6979 | { |
| 6980 | const cfg_obj_t *obj = NULL; |
| 6981 | const char *resource; |
| 6982 | isc_resourcevalue_t value; |
| 6983 | isc_result_t result; |
| 6984 | |
| 6985 | if (named_config_get(maps, configname, &obj) != ISC_R_SUCCESS) |
| 6986 | return; |
| 6987 | |
| 6988 | if (cfg_obj_isstring(obj)) { |
| 6989 | resource = cfg_obj_asstring(obj); |
| 6990 | if (strcasecmp(resource, "unlimited" ) == 0) |
| 6991 | value = ISC_RESOURCE_UNLIMITED; |
| 6992 | else { |
| 6993 | INSIST(strcasecmp(resource, "default" ) == 0); |
| 6994 | value = defaultvalue; |
| 6995 | } |
| 6996 | } else |
| 6997 | value = cfg_obj_asuint64(obj); |
| 6998 | |
| 6999 | result = isc_resource_setlimit(resourceid, value); |
| 7000 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7001 | NAMED_LOGMODULE_SERVER, |
| 7002 | result == ISC_R_SUCCESS ? |
| 7003 | ISC_LOG_DEBUG(3) : ISC_LOG_WARNING, |
| 7004 | "set maximum %s to %" PRIu64 ": %s" , |
| 7005 | description, value, isc_result_totext(result)); |
| 7006 | } |
| 7007 | |
| 7008 | #define SETLIMIT(cfgvar, resource, description) \ |
| 7009 | set_limit(maps, cfgvar, description, isc_resource_ ## resource, \ |
| 7010 | named_g_init ## resource) |
| 7011 | |
| 7012 | static void |
| 7013 | set_limits(const cfg_obj_t **maps) { |
| 7014 | SETLIMIT("stacksize" , stacksize, "stack size" ); |
| 7015 | SETLIMIT("datasize" , datasize, "data size" ); |
| 7016 | SETLIMIT("coresize" , coresize, "core size" ); |
| 7017 | SETLIMIT("files" , openfiles, "open files" ); |
| 7018 | } |
| 7019 | |
| 7020 | static void |
| 7021 | portset_fromconf(isc_portset_t *portset, const cfg_obj_t *ports, |
| 7022 | bool positive) |
| 7023 | { |
| 7024 | const cfg_listelt_t *element; |
| 7025 | |
| 7026 | for (element = cfg_list_first(ports); |
| 7027 | element != NULL; |
| 7028 | element = cfg_list_next(element)) { |
| 7029 | const cfg_obj_t *obj = cfg_listelt_value(element); |
| 7030 | |
| 7031 | if (cfg_obj_isuint32(obj)) { |
| 7032 | in_port_t port = (in_port_t)cfg_obj_asuint32(obj); |
| 7033 | |
| 7034 | if (positive) |
| 7035 | isc_portset_add(portset, port); |
| 7036 | else |
| 7037 | isc_portset_remove(portset, port); |
| 7038 | } else { |
| 7039 | const cfg_obj_t *obj_loport, *obj_hiport; |
| 7040 | in_port_t loport, hiport; |
| 7041 | |
| 7042 | obj_loport = cfg_tuple_get(obj, "loport" ); |
| 7043 | loport = (in_port_t)cfg_obj_asuint32(obj_loport); |
| 7044 | obj_hiport = cfg_tuple_get(obj, "hiport" ); |
| 7045 | hiport = (in_port_t)cfg_obj_asuint32(obj_hiport); |
| 7046 | |
| 7047 | if (positive) |
| 7048 | isc_portset_addrange(portset, loport, hiport); |
| 7049 | else { |
| 7050 | isc_portset_removerange(portset, loport, |
| 7051 | hiport); |
| 7052 | } |
| 7053 | } |
| 7054 | } |
| 7055 | } |
| 7056 | |
| 7057 | static isc_result_t |
| 7058 | removed(dns_zone_t *zone, void *uap) { |
| 7059 | const char *type; |
| 7060 | |
| 7061 | if (dns_zone_getview(zone) != uap) |
| 7062 | return (ISC_R_SUCCESS); |
| 7063 | |
| 7064 | switch (dns_zone_gettype(zone)) { |
| 7065 | case dns_zone_master: |
| 7066 | type = "master" ; |
| 7067 | break; |
| 7068 | case dns_zone_slave: |
| 7069 | type = "slave" ; |
| 7070 | break; |
| 7071 | case dns_zone_mirror: |
| 7072 | type = "mirror" ; |
| 7073 | break; |
| 7074 | case dns_zone_stub: |
| 7075 | type = "stub" ; |
| 7076 | break; |
| 7077 | case dns_zone_staticstub: |
| 7078 | type = "static-stub" ; |
| 7079 | break; |
| 7080 | case dns_zone_redirect: |
| 7081 | type = "redirect" ; |
| 7082 | break; |
| 7083 | default: |
| 7084 | type = "other" ; |
| 7085 | break; |
| 7086 | } |
| 7087 | dns_zone_log(zone, ISC_LOG_INFO, "(%s) removed" , type); |
| 7088 | return (ISC_R_SUCCESS); |
| 7089 | } |
| 7090 | |
| 7091 | static void |
| 7092 | cleanup_session_key(named_server_t *server, isc_mem_t *mctx) { |
| 7093 | if (server->session_keyfile != NULL) { |
| 7094 | isc_file_remove(server->session_keyfile); |
| 7095 | isc_mem_free(mctx, server->session_keyfile); |
| 7096 | server->session_keyfile = NULL; |
| 7097 | } |
| 7098 | |
| 7099 | if (server->session_keyname != NULL) { |
| 7100 | if (dns_name_dynamic(server->session_keyname)) |
| 7101 | dns_name_free(server->session_keyname, mctx); |
| 7102 | isc_mem_put(mctx, server->session_keyname, sizeof(dns_name_t)); |
| 7103 | server->session_keyname = NULL; |
| 7104 | } |
| 7105 | |
| 7106 | if (server->sessionkey != NULL) |
| 7107 | dns_tsigkey_detach(&server->sessionkey); |
| 7108 | |
| 7109 | server->session_keyalg = DST_ALG_UNKNOWN; |
| 7110 | server->session_keybits = 0; |
| 7111 | } |
| 7112 | |
| 7113 | static isc_result_t |
| 7114 | generate_session_key(const char *filename, const char *keynamestr, |
| 7115 | const dns_name_t *keyname, const char *algstr, |
| 7116 | const dns_name_t *algname, unsigned int algtype, |
| 7117 | uint16_t bits, isc_mem_t *mctx, |
| 7118 | dns_tsigkey_t **tsigkeyp) |
| 7119 | { |
| 7120 | isc_result_t result = ISC_R_SUCCESS; |
| 7121 | dst_key_t *key = NULL; |
| 7122 | isc_buffer_t key_txtbuffer; |
| 7123 | isc_buffer_t key_rawbuffer; |
| 7124 | char key_txtsecret[256]; |
| 7125 | char key_rawsecret[64]; |
| 7126 | isc_region_t key_rawregion; |
| 7127 | isc_stdtime_t now; |
| 7128 | dns_tsigkey_t *tsigkey = NULL; |
| 7129 | FILE *fp = NULL; |
| 7130 | |
| 7131 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7132 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 7133 | "generating session key for dynamic DNS" ); |
| 7134 | |
| 7135 | /* generate key */ |
| 7136 | result = dst_key_generate(keyname, algtype, bits, 1, 0, |
| 7137 | DNS_KEYPROTO_ANY, dns_rdataclass_in, |
| 7138 | mctx, &key, NULL); |
| 7139 | if (result != ISC_R_SUCCESS) |
| 7140 | return (result); |
| 7141 | |
| 7142 | /* |
| 7143 | * Dump the key to the buffer for later use. Should be done before |
| 7144 | * we transfer the ownership of key to tsigkey. |
| 7145 | */ |
| 7146 | isc_buffer_init(&key_rawbuffer, &key_rawsecret, sizeof(key_rawsecret)); |
| 7147 | CHECK(dst_key_tobuffer(key, &key_rawbuffer)); |
| 7148 | |
| 7149 | isc_buffer_usedregion(&key_rawbuffer, &key_rawregion); |
| 7150 | isc_buffer_init(&key_txtbuffer, &key_txtsecret, sizeof(key_txtsecret)); |
| 7151 | CHECK(isc_base64_totext(&key_rawregion, -1, "" , &key_txtbuffer)); |
| 7152 | |
| 7153 | /* Store the key in tsigkey. */ |
| 7154 | isc_stdtime_get(&now); |
| 7155 | CHECK(dns_tsigkey_createfromkey(dst_key_name(key), algname, key, |
| 7156 | false, NULL, now, now, mctx, NULL, |
| 7157 | &tsigkey)); |
| 7158 | |
| 7159 | /* Dump the key to the key file. */ |
| 7160 | fp = named_os_openfile(filename, S_IRUSR|S_IWUSR, true); |
| 7161 | if (fp == NULL) { |
| 7162 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7163 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 7164 | "could not create %s" , filename); |
| 7165 | result = ISC_R_NOPERM; |
| 7166 | goto cleanup; |
| 7167 | } |
| 7168 | |
| 7169 | fprintf(fp, "key \"%s\" {\n" |
| 7170 | "\talgorithm %s;\n" |
| 7171 | "\tsecret \"%.*s\";\n};\n" , keynamestr, algstr, |
| 7172 | (int) isc_buffer_usedlength(&key_txtbuffer), |
| 7173 | (char*) isc_buffer_base(&key_txtbuffer)); |
| 7174 | |
| 7175 | CHECK(isc_stdio_flush(fp)); |
| 7176 | result = isc_stdio_close(fp); |
| 7177 | fp = NULL; |
| 7178 | if (result != ISC_R_SUCCESS) |
| 7179 | goto cleanup; |
| 7180 | |
| 7181 | dst_key_free(&key); |
| 7182 | |
| 7183 | *tsigkeyp = tsigkey; |
| 7184 | |
| 7185 | return (ISC_R_SUCCESS); |
| 7186 | |
| 7187 | cleanup: |
| 7188 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7189 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 7190 | "failed to generate session key " |
| 7191 | "for dynamic DNS: %s" , isc_result_totext(result)); |
| 7192 | if (fp != NULL) { |
| 7193 | (void)isc_stdio_close(fp); |
| 7194 | (void)isc_file_remove(filename); |
| 7195 | } |
| 7196 | if (tsigkey != NULL) |
| 7197 | dns_tsigkey_detach(&tsigkey); |
| 7198 | if (key != NULL) |
| 7199 | dst_key_free(&key); |
| 7200 | |
| 7201 | return (result); |
| 7202 | } |
| 7203 | |
| 7204 | static isc_result_t |
| 7205 | configure_session_key(const cfg_obj_t **maps, named_server_t *server, |
| 7206 | isc_mem_t *mctx) |
| 7207 | { |
| 7208 | const char *keyfile, *keynamestr, *algstr; |
| 7209 | unsigned int algtype; |
| 7210 | dns_fixedname_t fname; |
| 7211 | dns_name_t *keyname; |
| 7212 | const dns_name_t *algname; |
| 7213 | isc_buffer_t buffer; |
| 7214 | uint16_t bits; |
| 7215 | const cfg_obj_t *obj; |
| 7216 | bool need_deleteold = false; |
| 7217 | bool need_createnew = false; |
| 7218 | isc_result_t result; |
| 7219 | |
| 7220 | obj = NULL; |
| 7221 | result = named_config_get(maps, "session-keyfile" , &obj); |
| 7222 | if (result == ISC_R_SUCCESS) { |
| 7223 | if (cfg_obj_isvoid(obj)) |
| 7224 | keyfile = NULL; /* disable it */ |
| 7225 | else |
| 7226 | keyfile = cfg_obj_asstring(obj); |
| 7227 | } else |
| 7228 | keyfile = named_g_defaultsessionkeyfile; |
| 7229 | |
| 7230 | obj = NULL; |
| 7231 | result = named_config_get(maps, "session-keyname" , &obj); |
| 7232 | INSIST(result == ISC_R_SUCCESS); |
| 7233 | keynamestr = cfg_obj_asstring(obj); |
| 7234 | isc_buffer_constinit(&buffer, keynamestr, strlen(keynamestr)); |
| 7235 | isc_buffer_add(&buffer, strlen(keynamestr)); |
| 7236 | keyname = dns_fixedname_initname(&fname); |
| 7237 | result = dns_name_fromtext(keyname, &buffer, dns_rootname, 0, NULL); |
| 7238 | if (result != ISC_R_SUCCESS) |
| 7239 | return (result); |
| 7240 | |
| 7241 | obj = NULL; |
| 7242 | result = named_config_get(maps, "session-keyalg" , &obj); |
| 7243 | INSIST(result == ISC_R_SUCCESS); |
| 7244 | algstr = cfg_obj_asstring(obj); |
| 7245 | algname = NULL; |
| 7246 | result = named_config_getkeyalgorithm2(algstr, &algname, &algtype, |
| 7247 | &bits); |
| 7248 | if (result != ISC_R_SUCCESS) { |
| 7249 | const char *s = " (keeping current key)" ; |
| 7250 | |
| 7251 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_ERROR, "session-keyalg: " |
| 7252 | "unsupported or unknown algorithm '%s'%s" , |
| 7253 | algstr, |
| 7254 | server->session_keyfile != NULL ? s : "" ); |
| 7255 | return (result); |
| 7256 | } |
| 7257 | |
| 7258 | /* See if we need to (re)generate a new key. */ |
| 7259 | if (keyfile == NULL) { |
| 7260 | if (server->session_keyfile != NULL) |
| 7261 | need_deleteold = true; |
| 7262 | } else if (server->session_keyfile == NULL) |
| 7263 | need_createnew = true; |
| 7264 | else if (strcmp(keyfile, server->session_keyfile) != 0 || |
| 7265 | !dns_name_equal(server->session_keyname, keyname) || |
| 7266 | server->session_keyalg != algtype || |
| 7267 | server->session_keybits != bits) { |
| 7268 | need_deleteold = true; |
| 7269 | need_createnew = true; |
| 7270 | } |
| 7271 | |
| 7272 | if (need_deleteold) { |
| 7273 | INSIST(server->session_keyfile != NULL); |
| 7274 | INSIST(server->session_keyname != NULL); |
| 7275 | INSIST(server->sessionkey != NULL); |
| 7276 | |
| 7277 | cleanup_session_key(server, mctx); |
| 7278 | } |
| 7279 | |
| 7280 | if (need_createnew) { |
| 7281 | INSIST(server->sessionkey == NULL); |
| 7282 | INSIST(server->session_keyfile == NULL); |
| 7283 | INSIST(server->session_keyname == NULL); |
| 7284 | INSIST(server->session_keyalg == DST_ALG_UNKNOWN); |
| 7285 | INSIST(server->session_keybits == 0); |
| 7286 | |
| 7287 | server->session_keyname = isc_mem_get(mctx, sizeof(dns_name_t)); |
| 7288 | if (server->session_keyname == NULL) |
| 7289 | goto cleanup; |
| 7290 | dns_name_init(server->session_keyname, NULL); |
| 7291 | CHECK(dns_name_dup(keyname, mctx, server->session_keyname)); |
| 7292 | |
| 7293 | server->session_keyfile = isc_mem_strdup(mctx, keyfile); |
| 7294 | if (server->session_keyfile == NULL) |
| 7295 | goto cleanup; |
| 7296 | |
| 7297 | server->session_keyalg = algtype; |
| 7298 | server->session_keybits = bits; |
| 7299 | |
| 7300 | CHECK(generate_session_key(keyfile, keynamestr, keyname, algstr, |
| 7301 | algname, algtype, bits, mctx, |
| 7302 | &server->sessionkey)); |
| 7303 | } |
| 7304 | |
| 7305 | return (result); |
| 7306 | |
| 7307 | cleanup: |
| 7308 | cleanup_session_key(server, mctx); |
| 7309 | return (result); |
| 7310 | } |
| 7311 | |
| 7312 | #ifndef HAVE_LMDB |
| 7313 | static isc_result_t |
| 7314 | count_newzones(dns_view_t *view, ns_cfgctx_t *nzcfg, int *num_zonesp) { |
| 7315 | isc_result_t result; |
| 7316 | |
| 7317 | /* The new zone file may not exist. That is OK. */ |
| 7318 | if (!isc_file_exists(view->new_zone_file)) { |
| 7319 | *num_zonesp = 0; |
| 7320 | return (ISC_R_SUCCESS); |
| 7321 | } |
| 7322 | |
| 7323 | /* |
| 7324 | * In the case of NZF files, we also parse the configuration in |
| 7325 | * the file at this stage. |
| 7326 | * |
| 7327 | * This may be called in multiple views, so we reset |
| 7328 | * the parser each time. |
| 7329 | */ |
| 7330 | cfg_parser_reset(named_g_addparser); |
| 7331 | result = cfg_parse_file(named_g_addparser, view->new_zone_file, |
| 7332 | &cfg_type_addzoneconf, &nzcfg->nzf_config); |
| 7333 | if (result == ISC_R_SUCCESS) { |
| 7334 | int num_zones; |
| 7335 | |
| 7336 | num_zones = count_zones(nzcfg->nzf_config); |
| 7337 | isc_log_write(named_g_lctx, |
| 7338 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7339 | ISC_LOG_INFO, |
| 7340 | "NZF file '%s' contains %d zones" , |
| 7341 | view->new_zone_file, num_zones); |
| 7342 | if (num_zonesp != NULL) |
| 7343 | *num_zonesp = num_zones; |
| 7344 | } else { |
| 7345 | isc_log_write(named_g_lctx, |
| 7346 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7347 | ISC_LOG_ERROR, |
| 7348 | "Error parsing NZF file '%s': %s" , |
| 7349 | view->new_zone_file, |
| 7350 | isc_result_totext(result)); |
| 7351 | } |
| 7352 | |
| 7353 | return (result); |
| 7354 | } |
| 7355 | |
| 7356 | #else /* HAVE_LMDB */ |
| 7357 | |
| 7358 | static isc_result_t |
| 7359 | count_newzones(dns_view_t *view, ns_cfgctx_t *nzcfg, int *num_zonesp) { |
| 7360 | isc_result_t result; |
| 7361 | int n; |
| 7362 | |
| 7363 | UNUSED(nzcfg); |
| 7364 | |
| 7365 | REQUIRE(num_zonesp != NULL); |
| 7366 | |
| 7367 | CHECK(migrate_nzf(view)); |
| 7368 | |
| 7369 | isc_log_write(named_g_lctx, |
| 7370 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7371 | ISC_LOG_INFO, "loading NZD zone count from '%s' " |
| 7372 | "for view '%s'" , |
| 7373 | view->new_zone_db, view->name); |
| 7374 | |
| 7375 | CHECK(nzd_count(view, &n)); |
| 7376 | |
| 7377 | *num_zonesp = n; |
| 7378 | |
| 7379 | isc_log_write(named_g_lctx, |
| 7380 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7381 | ISC_LOG_INFO, |
| 7382 | "NZD database '%s' contains %d zones" , |
| 7383 | view->new_zone_db, n); |
| 7384 | |
| 7385 | cleanup: |
| 7386 | if (result != ISC_R_SUCCESS) |
| 7387 | *num_zonesp = 0; |
| 7388 | |
| 7389 | return (ISC_R_SUCCESS); |
| 7390 | } |
| 7391 | |
| 7392 | #endif /* HAVE_LMDB */ |
| 7393 | |
| 7394 | static isc_result_t |
| 7395 | setup_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig, |
| 7396 | cfg_parser_t *conf_parser, cfg_aclconfctx_t *actx, |
| 7397 | int *num_zones) |
| 7398 | { |
| 7399 | isc_result_t result = ISC_R_SUCCESS; |
| 7400 | bool allow = false; |
| 7401 | ns_cfgctx_t *nzcfg = NULL; |
| 7402 | const cfg_obj_t *maps[4]; |
| 7403 | const cfg_obj_t *options = NULL, *voptions = NULL; |
| 7404 | const cfg_obj_t *nz = NULL; |
| 7405 | const cfg_obj_t *nzdir = NULL; |
| 7406 | const char *dir = NULL; |
| 7407 | const cfg_obj_t *obj = NULL; |
| 7408 | int i = 0; |
| 7409 | uint64_t mapsize = 0ULL; |
| 7410 | |
| 7411 | REQUIRE(config != NULL); |
| 7412 | |
| 7413 | if (vconfig != NULL) |
| 7414 | voptions = cfg_tuple_get(vconfig, "options" ); |
| 7415 | if (voptions != NULL) |
| 7416 | maps[i++] = voptions; |
| 7417 | result = cfg_map_get(config, "options" , &options); |
| 7418 | if (result == ISC_R_SUCCESS) |
| 7419 | maps[i++] = options; |
| 7420 | maps[i++] = named_g_defaults; |
| 7421 | maps[i] = NULL; |
| 7422 | |
| 7423 | result = named_config_get(maps, "allow-new-zones" , &nz); |
| 7424 | if (result == ISC_R_SUCCESS) |
| 7425 | allow = cfg_obj_asboolean(nz); |
| 7426 | result = named_config_get(maps, "new-zones-directory" , &nzdir); |
| 7427 | if (result == ISC_R_SUCCESS) { |
| 7428 | dir = cfg_obj_asstring(nzdir); |
| 7429 | if (dir != NULL) { |
| 7430 | result = isc_file_isdirectory(dir); |
| 7431 | } |
| 7432 | if (result != ISC_R_SUCCESS) { |
| 7433 | isc_log_write(named_g_lctx, DNS_LOGCATEGORY_SECURITY, |
| 7434 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 7435 | "invalid new-zones-directory %s: %s" , |
| 7436 | dir, isc_result_totext(result)); |
| 7437 | return (result); |
| 7438 | } |
| 7439 | if (!isc_file_isdirwritable(dir)) { |
| 7440 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7441 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 7442 | "new-zones-directory '%s' " |
| 7443 | "is not writable" , dir); |
| 7444 | return (ISC_R_NOPERM); |
| 7445 | } |
| 7446 | |
| 7447 | dns_view_setnewzonedir(view, dir); |
| 7448 | } |
| 7449 | |
| 7450 | #ifdef HAVE_LMDB |
| 7451 | result = named_config_get(maps, "lmdb-mapsize" , &obj); |
| 7452 | if (result == ISC_R_SUCCESS && obj != NULL) { |
| 7453 | mapsize = cfg_obj_asuint64(obj); |
| 7454 | if (mapsize < (1ULL << 20)) { /* 1 megabyte */ |
| 7455 | cfg_obj_log(obj, named_g_lctx, |
| 7456 | ISC_LOG_ERROR, |
| 7457 | "'lmdb-mapsize " |
| 7458 | "%" PRId64 "' " |
| 7459 | "is too small" , |
| 7460 | mapsize); |
| 7461 | return (ISC_R_FAILURE); |
| 7462 | } else if (mapsize > (1ULL << 40)) { /* 1 terabyte */ |
| 7463 | cfg_obj_log(obj, named_g_lctx, |
| 7464 | ISC_LOG_ERROR, |
| 7465 | "'lmdb-mapsize " |
| 7466 | "%" PRId64 "' " |
| 7467 | "is too large" , |
| 7468 | mapsize); |
| 7469 | return (ISC_R_FAILURE); |
| 7470 | } |
| 7471 | } |
| 7472 | #else |
| 7473 | UNUSED(obj); |
| 7474 | #endif /* HAVE_LMDB */ |
| 7475 | |
| 7476 | /* |
| 7477 | * A non-empty catalog-zones statement implies allow-new-zones |
| 7478 | */ |
| 7479 | if (!allow) { |
| 7480 | const cfg_obj_t *cz = NULL; |
| 7481 | result = named_config_get(maps, "catalog-zones" , &cz); |
| 7482 | if (result == ISC_R_SUCCESS) { |
| 7483 | const cfg_listelt_t *e = |
| 7484 | cfg_list_first(cfg_tuple_get(cz, "zone list" )); |
| 7485 | if (e != NULL) |
| 7486 | allow = true; |
| 7487 | } |
| 7488 | } |
| 7489 | |
| 7490 | if (!allow) { |
| 7491 | dns_view_setnewzones(view, false, NULL, NULL, 0ULL); |
| 7492 | if (num_zones != NULL) |
| 7493 | *num_zones = 0; |
| 7494 | return (ISC_R_SUCCESS); |
| 7495 | } |
| 7496 | |
| 7497 | nzcfg = isc_mem_get(view->mctx, sizeof(*nzcfg)); |
| 7498 | if (nzcfg == NULL) { |
| 7499 | dns_view_setnewzones(view, false, NULL, NULL, 0ULL); |
| 7500 | return (ISC_R_NOMEMORY); |
| 7501 | } |
| 7502 | |
| 7503 | /* |
| 7504 | * We attach the parser that was used for config as well |
| 7505 | * as the one that will be used for added zones, to avoid |
| 7506 | * a shutdown race later. |
| 7507 | */ |
| 7508 | memset(nzcfg, 0, sizeof(*nzcfg)); |
| 7509 | cfg_parser_attach(conf_parser, &nzcfg->conf_parser); |
| 7510 | cfg_parser_attach(named_g_addparser, &nzcfg->add_parser); |
| 7511 | isc_mem_attach(view->mctx, &nzcfg->mctx); |
| 7512 | cfg_aclconfctx_attach(actx, &nzcfg->actx); |
| 7513 | |
| 7514 | result = dns_view_setnewzones(view, true, nzcfg, |
| 7515 | newzone_cfgctx_destroy, mapsize); |
| 7516 | if (result != ISC_R_SUCCESS) { |
| 7517 | dns_view_setnewzones(view, false, NULL, NULL, 0ULL); |
| 7518 | return (result); |
| 7519 | } |
| 7520 | |
| 7521 | cfg_obj_attach(config, &nzcfg->config); |
| 7522 | if (vconfig != NULL) |
| 7523 | cfg_obj_attach(vconfig, &nzcfg->vconfig); |
| 7524 | |
| 7525 | result = count_newzones(view, nzcfg, num_zones); |
| 7526 | return (result); |
| 7527 | } |
| 7528 | |
| 7529 | static void |
| 7530 | configure_zone_setviewcommit(isc_result_t result, const cfg_obj_t *zconfig, |
| 7531 | dns_view_t *view) |
| 7532 | { |
| 7533 | const char *zname; |
| 7534 | dns_fixedname_t fixorigin; |
| 7535 | dns_name_t *origin; |
| 7536 | isc_result_t result2; |
| 7537 | dns_view_t *pview = NULL; |
| 7538 | dns_zone_t *zone = NULL; |
| 7539 | dns_zone_t *raw = NULL; |
| 7540 | |
| 7541 | zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name" )); |
| 7542 | origin = dns_fixedname_initname(&fixorigin); |
| 7543 | |
| 7544 | result2 = dns_name_fromstring(origin, zname, 0, NULL); |
| 7545 | if (result2 != ISC_R_SUCCESS) { |
| 7546 | return; |
| 7547 | } |
| 7548 | |
| 7549 | result2 = dns_viewlist_find(&named_g_server->viewlist, view->name, |
| 7550 | view->rdclass, &pview); |
| 7551 | if (result2 != ISC_R_SUCCESS) { |
| 7552 | return; |
| 7553 | } |
| 7554 | |
| 7555 | result2 = dns_view_findzone(pview, origin, &zone); |
| 7556 | if (result2 != ISC_R_SUCCESS) { |
| 7557 | dns_view_detach(&pview); |
| 7558 | return; |
| 7559 | } |
| 7560 | |
| 7561 | dns_zone_getraw(zone, &raw); |
| 7562 | |
| 7563 | if (result == ISC_R_SUCCESS) { |
| 7564 | dns_zone_setviewcommit(zone); |
| 7565 | if (raw != NULL) |
| 7566 | dns_zone_setviewcommit(raw); |
| 7567 | } else { |
| 7568 | dns_zone_setviewrevert(zone); |
| 7569 | if (raw != NULL) |
| 7570 | dns_zone_setviewrevert(raw); |
| 7571 | } |
| 7572 | |
| 7573 | if (raw != NULL) { |
| 7574 | dns_zone_detach(&raw); |
| 7575 | } |
| 7576 | |
| 7577 | dns_zone_detach(&zone); |
| 7578 | dns_view_detach(&pview); |
| 7579 | } |
| 7580 | |
| 7581 | #ifndef HAVE_LMDB |
| 7582 | |
| 7583 | static isc_result_t |
| 7584 | configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig, |
| 7585 | isc_mem_t *mctx, cfg_aclconfctx_t *actx) |
| 7586 | { |
| 7587 | isc_result_t result; |
| 7588 | ns_cfgctx_t *nzctx; |
| 7589 | const cfg_obj_t *zonelist; |
| 7590 | const cfg_listelt_t *element; |
| 7591 | |
| 7592 | nzctx = view->new_zone_config; |
| 7593 | if (nzctx == NULL || nzctx->nzf_config == NULL) { |
| 7594 | return (ISC_R_SUCCESS); |
| 7595 | } |
| 7596 | |
| 7597 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7598 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 7599 | "loading additional zones for view '%s'" , |
| 7600 | view->name); |
| 7601 | |
| 7602 | zonelist = NULL; |
| 7603 | cfg_map_get(nzctx->nzf_config, "zone" , &zonelist); |
| 7604 | |
| 7605 | for (element = cfg_list_first(zonelist); |
| 7606 | element != NULL; |
| 7607 | element = cfg_list_next(element)) |
| 7608 | { |
| 7609 | const cfg_obj_t *zconfig = cfg_listelt_value(element); |
| 7610 | CHECK(configure_zone(config, zconfig, vconfig, mctx, |
| 7611 | view, &named_g_server->viewlist, actx, |
| 7612 | true, false, false)); |
| 7613 | } |
| 7614 | |
| 7615 | result = ISC_R_SUCCESS; |
| 7616 | |
| 7617 | cleanup: |
| 7618 | for (element = cfg_list_first(zonelist); |
| 7619 | element != NULL; |
| 7620 | element = cfg_list_next(element)) |
| 7621 | { |
| 7622 | const cfg_obj_t *zconfig = cfg_listelt_value(element); |
| 7623 | configure_zone_setviewcommit(result, zconfig, view); |
| 7624 | } |
| 7625 | |
| 7626 | return (result); |
| 7627 | } |
| 7628 | |
| 7629 | #else /* HAVE_LMDB */ |
| 7630 | |
| 7631 | static isc_result_t |
| 7632 | data_to_cfg(dns_view_t *view, MDB_val *key, MDB_val *data, |
| 7633 | isc_buffer_t **text, cfg_obj_t **zoneconfig) |
| 7634 | { |
| 7635 | isc_result_t result; |
| 7636 | const char *zone_name; |
| 7637 | size_t zone_name_len; |
| 7638 | const char *zone_config; |
| 7639 | size_t zone_config_len; |
| 7640 | cfg_obj_t *zoneconf = NULL; |
| 7641 | |
| 7642 | REQUIRE(view != NULL); |
| 7643 | REQUIRE(key != NULL); |
| 7644 | REQUIRE(data != NULL); |
| 7645 | REQUIRE(text != NULL); |
| 7646 | REQUIRE(zoneconfig != NULL && *zoneconfig == NULL); |
| 7647 | |
| 7648 | if (*text == NULL) { |
| 7649 | result = isc_buffer_allocate(view->mctx, text, 256); |
| 7650 | if (result != ISC_R_SUCCESS) |
| 7651 | goto cleanup; |
| 7652 | } else { |
| 7653 | isc_buffer_clear(*text); |
| 7654 | } |
| 7655 | |
| 7656 | zone_name = (const char *) key->mv_data; |
| 7657 | zone_name_len = key->mv_size; |
| 7658 | INSIST(zone_name != NULL && zone_name_len > 0); |
| 7659 | |
| 7660 | zone_config = (const char *) data->mv_data; |
| 7661 | zone_config_len = data->mv_size; |
| 7662 | INSIST(zone_config != NULL && zone_config_len > 0); |
| 7663 | |
| 7664 | /* zone zonename { config; }; */ |
| 7665 | result = isc_buffer_reserve(text, 5 + zone_name_len + 1 + |
| 7666 | zone_config_len + 2); |
| 7667 | if (result != ISC_R_SUCCESS) { |
| 7668 | goto cleanup; |
| 7669 | } |
| 7670 | |
| 7671 | CHECK(putstr(text, "zone " )); |
| 7672 | CHECK(putmem(text, (const void *) zone_name, zone_name_len)); |
| 7673 | CHECK(putstr(text, " " )); |
| 7674 | CHECK(putmem(text, (const void *) zone_config, zone_config_len)); |
| 7675 | CHECK(putstr(text, ";\n" )); |
| 7676 | |
| 7677 | cfg_parser_reset(named_g_addparser); |
| 7678 | result = cfg_parse_buffer(named_g_addparser, *text, zone_name, 0, |
| 7679 | &cfg_type_addzoneconf, 0, &zoneconf); |
| 7680 | if (result != ISC_R_SUCCESS) { |
| 7681 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7682 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 7683 | "parsing config for zone '%.*s' in " |
| 7684 | "NZD database '%s' failed" , |
| 7685 | (int) zone_name_len, zone_name, |
| 7686 | view->new_zone_db); |
| 7687 | goto cleanup; |
| 7688 | } |
| 7689 | |
| 7690 | *zoneconfig = zoneconf; |
| 7691 | zoneconf = NULL; |
| 7692 | result = ISC_R_SUCCESS; |
| 7693 | |
| 7694 | cleanup: |
| 7695 | if (zoneconf != NULL) { |
| 7696 | cfg_obj_destroy(named_g_addparser, &zoneconf); |
| 7697 | } |
| 7698 | |
| 7699 | return (result); |
| 7700 | } |
| 7701 | |
| 7702 | /*% |
| 7703 | * Prototype for a callback which can be used with for_all_newzone_cfgs(). |
| 7704 | */ |
| 7705 | typedef isc_result_t (*newzone_cfg_cb_t)(const cfg_obj_t *zconfig, |
| 7706 | cfg_obj_t *config, cfg_obj_t *vconfig, |
| 7707 | isc_mem_t *mctx, dns_view_t *view, |
| 7708 | cfg_aclconfctx_t *actx); |
| 7709 | |
| 7710 | /*% |
| 7711 | * For each zone found in a NZD opened by the caller, create an object |
| 7712 | * representing its configuration and invoke "callback" with the created |
| 7713 | * object, "config", "vconfig", "mctx", "view" and "actx" as arguments (all |
| 7714 | * these are non-global variables required to invoke configure_zone()). |
| 7715 | * Immediately interrupt processing if an error is encountered while |
| 7716 | * transforming NZD data into a zone configuration object or if "callback" |
| 7717 | * returns an error. |
| 7718 | */ |
| 7719 | static isc_result_t |
| 7720 | for_all_newzone_cfgs(newzone_cfg_cb_t callback, cfg_obj_t *config, |
| 7721 | cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view, |
| 7722 | cfg_aclconfctx_t *actx, MDB_txn *txn, MDB_dbi dbi) |
| 7723 | { |
| 7724 | const cfg_obj_t *zconfig, *zlist; |
| 7725 | isc_result_t result = ISC_R_SUCCESS; |
| 7726 | cfg_obj_t *zconfigobj = NULL; |
| 7727 | isc_buffer_t *text = NULL; |
| 7728 | MDB_cursor *cursor = NULL; |
| 7729 | MDB_val data, key; |
| 7730 | int status; |
| 7731 | |
| 7732 | status = mdb_cursor_open(txn, dbi, &cursor); |
| 7733 | if (status != MDB_SUCCESS) { |
| 7734 | return (ISC_R_FAILURE); |
| 7735 | } |
| 7736 | |
| 7737 | for (status = mdb_cursor_get(cursor, &key, &data, MDB_FIRST); |
| 7738 | status == MDB_SUCCESS; |
| 7739 | status = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) |
| 7740 | { |
| 7741 | /* |
| 7742 | * Create a configuration object from data fetched from NZD. |
| 7743 | */ |
| 7744 | result = data_to_cfg(view, &key, &data, &text, &zconfigobj); |
| 7745 | if (result != ISC_R_SUCCESS) { |
| 7746 | break; |
| 7747 | } |
| 7748 | |
| 7749 | /* |
| 7750 | * Extract zone configuration from configuration object. |
| 7751 | */ |
| 7752 | zlist = NULL; |
| 7753 | result = cfg_map_get(zconfigobj, "zone" , &zlist); |
| 7754 | if (result != ISC_R_SUCCESS) { |
| 7755 | break; |
| 7756 | } else if (!cfg_obj_islist(zlist)) { |
| 7757 | result = ISC_R_FAILURE; |
| 7758 | break; |
| 7759 | } |
| 7760 | zconfig = cfg_listelt_value(cfg_list_first(zlist)); |
| 7761 | |
| 7762 | /* |
| 7763 | * Invoke callback. |
| 7764 | */ |
| 7765 | result = callback(zconfig, config, vconfig, mctx, view, actx); |
| 7766 | if (result != ISC_R_SUCCESS) { |
| 7767 | break; |
| 7768 | } |
| 7769 | |
| 7770 | /* |
| 7771 | * Destroy the configuration object created in this iteration. |
| 7772 | */ |
| 7773 | cfg_obj_destroy(named_g_addparser, &zconfigobj); |
| 7774 | } |
| 7775 | |
| 7776 | if (text != NULL) { |
| 7777 | isc_buffer_free(&text); |
| 7778 | } |
| 7779 | if (zconfigobj != NULL) { |
| 7780 | cfg_obj_destroy(named_g_addparser, &zconfigobj); |
| 7781 | } |
| 7782 | mdb_cursor_close(cursor); |
| 7783 | |
| 7784 | return (result); |
| 7785 | } |
| 7786 | |
| 7787 | /*% |
| 7788 | * Attempt to configure a zone found in NZD and return the result. |
| 7789 | */ |
| 7790 | static isc_result_t |
| 7791 | configure_newzone(const cfg_obj_t *zconfig, cfg_obj_t *config, |
| 7792 | cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view, |
| 7793 | cfg_aclconfctx_t *actx) |
| 7794 | { |
| 7795 | return (configure_zone(config, zconfig, vconfig, mctx, view, |
| 7796 | &named_g_server->viewlist, actx, true, |
| 7797 | false, false)); |
| 7798 | } |
| 7799 | |
| 7800 | /*% |
| 7801 | * Revert new view assignment for a zone found in NZD. |
| 7802 | */ |
| 7803 | static isc_result_t |
| 7804 | configure_newzone_revert(const cfg_obj_t *zconfig, cfg_obj_t *config, |
| 7805 | cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view, |
| 7806 | cfg_aclconfctx_t *actx) |
| 7807 | { |
| 7808 | UNUSED(config); |
| 7809 | UNUSED(vconfig); |
| 7810 | UNUSED(mctx); |
| 7811 | UNUSED(actx); |
| 7812 | |
| 7813 | configure_zone_setviewcommit(ISC_R_FAILURE, zconfig, view); |
| 7814 | |
| 7815 | return (ISC_R_SUCCESS); |
| 7816 | } |
| 7817 | |
| 7818 | static isc_result_t |
| 7819 | configure_newzones(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig, |
| 7820 | isc_mem_t *mctx, cfg_aclconfctx_t *actx) |
| 7821 | { |
| 7822 | isc_result_t result; |
| 7823 | MDB_txn *txn = NULL; |
| 7824 | MDB_dbi dbi; |
| 7825 | |
| 7826 | if (view->new_zone_config == NULL) { |
| 7827 | return (ISC_R_SUCCESS); |
| 7828 | } |
| 7829 | |
| 7830 | result = nzd_open(view, MDB_RDONLY, &txn, &dbi); |
| 7831 | if (result != ISC_R_SUCCESS) { |
| 7832 | return (ISC_R_SUCCESS); |
| 7833 | } |
| 7834 | |
| 7835 | isc_log_write(named_g_lctx, |
| 7836 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7837 | ISC_LOG_INFO, "loading NZD configs from '%s' " |
| 7838 | "for view '%s'" , |
| 7839 | view->new_zone_db, view->name); |
| 7840 | |
| 7841 | result = for_all_newzone_cfgs(configure_newzone, config, vconfig, mctx, |
| 7842 | view, actx, txn, dbi); |
| 7843 | if (result != ISC_R_SUCCESS) { |
| 7844 | /* |
| 7845 | * An error was encountered while attempting to configure zones |
| 7846 | * found in NZD. As this error may have been caused by a |
| 7847 | * configure_zone() failure, try restoring a sane configuration |
| 7848 | * by reattaching all zones found in NZD to the old view. If |
| 7849 | * this also fails, too bad, there is nothing more we can do in |
| 7850 | * terms of trying to make things right. |
| 7851 | */ |
| 7852 | (void) for_all_newzone_cfgs(configure_newzone_revert, config, |
| 7853 | vconfig, mctx, view, actx, txn, |
| 7854 | dbi); |
| 7855 | } |
| 7856 | |
| 7857 | (void) nzd_close(&txn, false); |
| 7858 | return (result); |
| 7859 | } |
| 7860 | |
| 7861 | static isc_result_t |
| 7862 | get_newzone_config(dns_view_t *view, const char *zonename, |
| 7863 | cfg_obj_t **zoneconfig) |
| 7864 | { |
| 7865 | isc_result_t result; |
| 7866 | int status; |
| 7867 | cfg_obj_t *zoneconf = NULL; |
| 7868 | isc_buffer_t *text = NULL; |
| 7869 | MDB_txn *txn = NULL; |
| 7870 | MDB_dbi dbi; |
| 7871 | MDB_val key, data; |
| 7872 | char zname[DNS_NAME_FORMATSIZE]; |
| 7873 | dns_fixedname_t fname; |
| 7874 | dns_name_t *name; |
| 7875 | isc_buffer_t b; |
| 7876 | |
| 7877 | INSIST(zoneconfig != NULL && *zoneconfig == NULL); |
| 7878 | |
| 7879 | CHECK(nzd_open(view, MDB_RDONLY, &txn, &dbi)); |
| 7880 | |
| 7881 | isc_log_write(named_g_lctx, |
| 7882 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 7883 | ISC_LOG_INFO, "loading NZD config from '%s' " |
| 7884 | "for zone '%s'" , |
| 7885 | view->new_zone_db, zonename); |
| 7886 | |
| 7887 | /* Normalize zone name */ |
| 7888 | isc_buffer_constinit(&b, zonename, strlen(zonename)); |
| 7889 | isc_buffer_add(&b, strlen(zonename)); |
| 7890 | name = dns_fixedname_initname(&fname); |
| 7891 | CHECK(dns_name_fromtext(name, &b, dns_rootname, |
| 7892 | DNS_NAME_DOWNCASE, NULL)); |
| 7893 | dns_name_format(name, zname, sizeof(zname)); |
| 7894 | |
| 7895 | key.mv_data = zname; |
| 7896 | key.mv_size = strlen(zname); |
| 7897 | |
| 7898 | status = mdb_get(txn, dbi, &key, &data); |
| 7899 | if (status != MDB_SUCCESS) { |
| 7900 | CHECK(ISC_R_FAILURE); |
| 7901 | } |
| 7902 | |
| 7903 | CHECK(data_to_cfg(view, &key, &data, &text, &zoneconf)); |
| 7904 | |
| 7905 | *zoneconfig = zoneconf; |
| 7906 | zoneconf = NULL; |
| 7907 | result = ISC_R_SUCCESS; |
| 7908 | |
| 7909 | cleanup: |
| 7910 | (void) nzd_close(&txn, false); |
| 7911 | |
| 7912 | if (zoneconf != NULL) { |
| 7913 | cfg_obj_destroy(named_g_addparser, &zoneconf); |
| 7914 | } |
| 7915 | if (text != NULL) { |
| 7916 | isc_buffer_free(&text); |
| 7917 | } |
| 7918 | |
| 7919 | return (result); |
| 7920 | } |
| 7921 | |
| 7922 | #endif /* HAVE_LMDB */ |
| 7923 | |
| 7924 | static int |
| 7925 | count_zones(const cfg_obj_t *conf) { |
| 7926 | const cfg_obj_t *zonelist = NULL; |
| 7927 | const cfg_listelt_t *element; |
| 7928 | int n = 0; |
| 7929 | |
| 7930 | REQUIRE(conf != NULL); |
| 7931 | |
| 7932 | cfg_map_get(conf, "zone" , &zonelist); |
| 7933 | for (element = cfg_list_first(zonelist); |
| 7934 | element != NULL; |
| 7935 | element = cfg_list_next(element)) |
| 7936 | n++; |
| 7937 | |
| 7938 | return (n); |
| 7939 | } |
| 7940 | |
| 7941 | static isc_result_t |
| 7942 | check_lockfile(named_server_t *server, const cfg_obj_t *config, |
| 7943 | bool first_time) |
| 7944 | { |
| 7945 | isc_result_t result; |
| 7946 | const char *filename = NULL; |
| 7947 | const cfg_obj_t *maps[3]; |
| 7948 | const cfg_obj_t *options; |
| 7949 | const cfg_obj_t *obj; |
| 7950 | int i; |
| 7951 | |
| 7952 | i = 0; |
| 7953 | options = NULL; |
| 7954 | result = cfg_map_get(config, "options" , &options); |
| 7955 | if (result == ISC_R_SUCCESS) |
| 7956 | maps[i++] = options; |
| 7957 | maps[i++] = named_g_defaults; |
| 7958 | maps[i] = NULL; |
| 7959 | |
| 7960 | obj = NULL; |
| 7961 | (void) named_config_get(maps, "lock-file" , &obj); |
| 7962 | |
| 7963 | if (!first_time) { |
| 7964 | if (obj != NULL && !cfg_obj_isstring(obj) && |
| 7965 | server->lockfile != NULL && |
| 7966 | strcmp(cfg_obj_asstring(obj), server->lockfile) != 0) |
| 7967 | isc_log_write(named_g_lctx, |
| 7968 | NAMED_LOGCATEGORY_GENERAL, |
| 7969 | NAMED_LOGMODULE_SERVER, |
| 7970 | ISC_LOG_WARNING, |
| 7971 | "changing 'lock-file' " |
| 7972 | "has no effect until the " |
| 7973 | "server is restarted" ); |
| 7974 | |
| 7975 | return (ISC_R_SUCCESS); |
| 7976 | } |
| 7977 | |
| 7978 | if (obj != NULL) { |
| 7979 | if (cfg_obj_isvoid(obj)) { |
| 7980 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7981 | NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1), |
| 7982 | "skipping lock-file check " ); |
| 7983 | return (ISC_R_SUCCESS); |
| 7984 | } else if (named_g_forcelock) { |
| 7985 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 7986 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 7987 | "'lock-file' has no effect " |
| 7988 | "because the server was run with -X" ); |
| 7989 | server->lockfile = isc_mem_strdup(server->mctx, |
| 7990 | named_g_defaultlockfile); |
| 7991 | } else { |
| 7992 | filename = cfg_obj_asstring(obj); |
| 7993 | server->lockfile = isc_mem_strdup(server->mctx, |
| 7994 | filename); |
| 7995 | } |
| 7996 | |
| 7997 | if (server->lockfile == NULL) |
| 7998 | return (ISC_R_NOMEMORY); |
| 7999 | } |
| 8000 | |
| 8001 | if (named_g_forcelock && named_g_defaultlockfile != NULL) { |
| 8002 | INSIST(server->lockfile == NULL); |
| 8003 | server->lockfile = isc_mem_strdup(server->mctx, |
| 8004 | named_g_defaultlockfile); |
| 8005 | } |
| 8006 | |
| 8007 | if (server->lockfile == NULL) |
| 8008 | return (ISC_R_SUCCESS); |
| 8009 | |
| 8010 | if (named_os_issingleton(server->lockfile)) |
| 8011 | return (ISC_R_SUCCESS); |
| 8012 | |
| 8013 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8014 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 8015 | "could not lock %s; another named " |
| 8016 | "process may be running" , server->lockfile); |
| 8017 | return (ISC_R_FAILURE); |
| 8018 | } |
| 8019 | |
| 8020 | static isc_result_t |
| 8021 | load_configuration(const char *filename, named_server_t *server, |
| 8022 | bool first_time) |
| 8023 | { |
| 8024 | cfg_obj_t *config = NULL, *bindkeys = NULL; |
| 8025 | cfg_parser_t *conf_parser = NULL, *bindkeys_parser = NULL; |
| 8026 | const cfg_listelt_t *element; |
| 8027 | const cfg_obj_t *builtin_views; |
| 8028 | const cfg_obj_t *maps[3]; |
| 8029 | const cfg_obj_t *obj; |
| 8030 | const cfg_obj_t *options; |
| 8031 | const cfg_obj_t *usev4ports, *avoidv4ports, *usev6ports, *avoidv6ports; |
| 8032 | const cfg_obj_t *views; |
| 8033 | dns_view_t *view = NULL; |
| 8034 | dns_view_t *view_next; |
| 8035 | dns_viewlist_t tmpviewlist; |
| 8036 | dns_viewlist_t viewlist, builtin_viewlist; |
| 8037 | in_port_t listen_port, udpport_low, udpport_high; |
| 8038 | int i, backlog; |
| 8039 | int num_zones = 0; |
| 8040 | bool exclusive = false; |
| 8041 | isc_interval_t interval; |
| 8042 | isc_logconfig_t *logc = NULL; |
| 8043 | isc_portset_t *v4portset = NULL; |
| 8044 | isc_portset_t *v6portset = NULL; |
| 8045 | isc_resourcevalue_t nfiles; |
| 8046 | isc_result_t result, tresult; |
| 8047 | uint32_t heartbeat_interval; |
| 8048 | uint32_t interface_interval; |
| 8049 | uint32_t reserved; |
| 8050 | uint32_t udpsize; |
| 8051 | uint32_t transfer_message_size; |
| 8052 | named_cache_t *nsc; |
| 8053 | named_cachelist_t cachelist, tmpcachelist; |
| 8054 | ns_altsecret_t *altsecret; |
| 8055 | ns_altsecretlist_t altsecrets, tmpaltsecrets; |
| 8056 | unsigned int maxsocks; |
| 8057 | uint32_t softquota = 0; |
| 8058 | uint32_t max; |
| 8059 | unsigned int initial, idle, keepalive, advertised; |
| 8060 | dns_aclenv_t *env = |
| 8061 | ns_interfacemgr_getaclenv(named_g_server->interfacemgr); |
| 8062 | |
| 8063 | ISC_LIST_INIT(viewlist); |
| 8064 | ISC_LIST_INIT(builtin_viewlist); |
| 8065 | ISC_LIST_INIT(cachelist); |
| 8066 | ISC_LIST_INIT(altsecrets); |
| 8067 | |
| 8068 | /* Create the ACL configuration context */ |
| 8069 | if (named_g_aclconfctx != NULL) { |
| 8070 | cfg_aclconfctx_detach(&named_g_aclconfctx); |
| 8071 | } |
| 8072 | CHECK(cfg_aclconfctx_create(named_g_mctx, &named_g_aclconfctx)); |
| 8073 | |
| 8074 | /* |
| 8075 | * Shut down all dyndb instances. |
| 8076 | */ |
| 8077 | dns_dyndb_cleanup(false); |
| 8078 | |
| 8079 | /* |
| 8080 | * Parse the global default pseudo-config file. |
| 8081 | */ |
| 8082 | if (first_time) { |
| 8083 | result = named_config_parsedefaults(named_g_parser, |
| 8084 | &named_g_config); |
| 8085 | if (result != ISC_R_SUCCESS) { |
| 8086 | named_main_earlyfatal("unable to load " |
| 8087 | "internal defaults: %s" , |
| 8088 | isc_result_totext(result)); |
| 8089 | } |
| 8090 | RUNTIME_CHECK(cfg_map_get(named_g_config, "options" , |
| 8091 | &named_g_defaults) == ISC_R_SUCCESS); |
| 8092 | } |
| 8093 | |
| 8094 | /* |
| 8095 | * Parse the configuration file using the new config code. |
| 8096 | */ |
| 8097 | config = NULL; |
| 8098 | isc_log_write(named_g_lctx, |
| 8099 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 8100 | ISC_LOG_INFO, "loading configuration from '%s'" , |
| 8101 | filename); |
| 8102 | CHECK(cfg_parser_create(named_g_mctx, named_g_lctx, |
| 8103 | &conf_parser)); |
| 8104 | cfg_parser_setcallback(conf_parser, directory_callback, NULL); |
| 8105 | result = cfg_parse_file(conf_parser, filename, |
| 8106 | &cfg_type_namedconf, &config); |
| 8107 | |
| 8108 | CHECK(result); |
| 8109 | |
| 8110 | /* |
| 8111 | * Check the validity of the configuration. |
| 8112 | * |
| 8113 | * (Ignore plugin parameters for now; they will be |
| 8114 | * checked later when the modules are actually loaded and |
| 8115 | * registered.) |
| 8116 | */ |
| 8117 | CHECK(bind9_check_namedconf(config, false, named_g_lctx, named_g_mctx)); |
| 8118 | |
| 8119 | /* |
| 8120 | * Fill in the maps array, used for resolving defaults. |
| 8121 | */ |
| 8122 | i = 0; |
| 8123 | options = NULL; |
| 8124 | result = cfg_map_get(config, "options" , &options); |
| 8125 | if (result == ISC_R_SUCCESS) { |
| 8126 | maps[i++] = options; |
| 8127 | } |
| 8128 | maps[i++] = named_g_defaults; |
| 8129 | maps[i] = NULL; |
| 8130 | |
| 8131 | /* |
| 8132 | * If bind.keys exists, load it. If "dnssec-validation auto" |
| 8133 | * is turned on, the root key found there will be used as a |
| 8134 | * default trust anchor. |
| 8135 | */ |
| 8136 | obj = NULL; |
| 8137 | result = named_config_get(maps, "bindkeys-file" , &obj); |
| 8138 | INSIST(result == ISC_R_SUCCESS); |
| 8139 | CHECKM(setstring(server, &server->bindkeysfile, |
| 8140 | cfg_obj_asstring(obj)), "strdup" ); |
| 8141 | |
| 8142 | if (access(server->bindkeysfile, R_OK) == 0) { |
| 8143 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8144 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8145 | "reading built-in trust anchors " |
| 8146 | "from file '%s'" , server->bindkeysfile); |
| 8147 | |
| 8148 | CHECK(cfg_parser_create(named_g_mctx, named_g_lctx, |
| 8149 | &bindkeys_parser)); |
| 8150 | |
| 8151 | result = cfg_parse_file(bindkeys_parser, server->bindkeysfile, |
| 8152 | &cfg_type_bindkeys, &bindkeys); |
| 8153 | CHECK(result); |
| 8154 | } else { |
| 8155 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8156 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8157 | "unable to open '%s'; using built-in keys " |
| 8158 | "instead" , server->bindkeysfile); |
| 8159 | } |
| 8160 | |
| 8161 | /* Ensure exclusive access to configuration data. */ |
| 8162 | if (!exclusive) { |
| 8163 | result = isc_task_beginexclusive(server->task); |
| 8164 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 8165 | exclusive = true; |
| 8166 | } |
| 8167 | |
| 8168 | /* |
| 8169 | * Set process limits, which (usually) needs to be done as root. |
| 8170 | */ |
| 8171 | set_limits(maps); |
| 8172 | |
| 8173 | /* |
| 8174 | * Check the process lockfile. |
| 8175 | */ |
| 8176 | CHECK(check_lockfile(server, config, first_time)); |
| 8177 | |
| 8178 | /* |
| 8179 | * Check if max number of open sockets that the system allows is |
| 8180 | * sufficiently large. Failing this condition is not necessarily fatal, |
| 8181 | * but may cause subsequent runtime failures for a busy recursive |
| 8182 | * server. |
| 8183 | */ |
| 8184 | result = isc_socketmgr_getmaxsockets(named_g_socketmgr, &maxsocks); |
| 8185 | if (result != ISC_R_SUCCESS) { |
| 8186 | maxsocks = 0; |
| 8187 | } |
| 8188 | result = isc_resource_getcurlimit(isc_resource_openfiles, &nfiles); |
| 8189 | if (result == ISC_R_SUCCESS && (isc_resourcevalue_t)maxsocks > nfiles) { |
| 8190 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8191 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 8192 | "max open files (%" PRIu64 ")" |
| 8193 | " is smaller than max sockets (%u)" , |
| 8194 | nfiles, maxsocks); |
| 8195 | } |
| 8196 | |
| 8197 | /* |
| 8198 | * Set the number of socket reserved for TCP, stdio etc. |
| 8199 | */ |
| 8200 | obj = NULL; |
| 8201 | result = named_config_get(maps, "reserved-sockets" , &obj); |
| 8202 | INSIST(result == ISC_R_SUCCESS); |
| 8203 | reserved = cfg_obj_asuint32(obj); |
| 8204 | if (maxsocks != 0) { |
| 8205 | if (maxsocks < 128U) { /* Prevent underflow. */ |
| 8206 | reserved = 0; |
| 8207 | } else if (reserved > maxsocks - 128U) { /* Minimum UDP space. */ |
| 8208 | reserved = maxsocks - 128; |
| 8209 | } |
| 8210 | } |
| 8211 | /* Minimum TCP/stdio space. */ |
| 8212 | if (reserved < 128U) { |
| 8213 | reserved = 128; |
| 8214 | } |
| 8215 | if (reserved + 128U > maxsocks && maxsocks != 0) { |
| 8216 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8217 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 8218 | "less than 128 UDP sockets available after " |
| 8219 | "applying 'reserved-sockets' and 'maxsockets'" ); |
| 8220 | } |
| 8221 | isc_socketmgr_setreserved(named_g_socketmgr, reserved); |
| 8222 | |
| 8223 | #ifdef HAVE_GEOIP |
| 8224 | /* |
| 8225 | * Initialize GeoIP databases from the configured location. |
| 8226 | * This should happen before configuring any ACLs, so that we |
| 8227 | * know what databases are available and can reject any GeoIP |
| 8228 | * ACLs that can't work. |
| 8229 | */ |
| 8230 | obj = NULL; |
| 8231 | result = named_config_get(maps, "geoip-directory" , &obj); |
| 8232 | if (result == ISC_R_SUCCESS && cfg_obj_isstring(obj)) { |
| 8233 | char *dir; |
| 8234 | DE_CONST(cfg_obj_asstring(obj), dir); |
| 8235 | named_geoip_load(dir); |
| 8236 | } else { |
| 8237 | named_geoip_load(NULL); |
| 8238 | } |
| 8239 | named_g_aclconfctx->geoip = named_g_geoip; |
| 8240 | #endif /* HAVE_GEOIP */ |
| 8241 | |
| 8242 | /* |
| 8243 | * Configure various server options. |
| 8244 | */ |
| 8245 | configure_server_quota(maps, "transfers-out" , |
| 8246 | &server->sctx->xfroutquota); |
| 8247 | configure_server_quota(maps, "tcp-clients" , &server->sctx->tcpquota); |
| 8248 | configure_server_quota(maps, "recursive-clients" , |
| 8249 | &server->sctx->recursionquota); |
| 8250 | |
| 8251 | max = isc_quota_getmax(&server->sctx->recursionquota); |
| 8252 | if (max > 1000) { |
| 8253 | unsigned margin = ISC_MAX(100, named_g_cpus + 1); |
| 8254 | if (margin + 100 > max) { |
| 8255 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8256 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 8257 | "'recursive-clients %d' too low when " |
| 8258 | "running with %d worker threads" , |
| 8259 | max, named_g_cpus); |
| 8260 | CHECK(ISC_R_RANGE); |
| 8261 | } |
| 8262 | softquota = max - margin; |
| 8263 | } else { |
| 8264 | softquota = (max * 90) / 100; |
| 8265 | } |
| 8266 | |
| 8267 | isc_quota_soft(&server->sctx->recursionquota, softquota); |
| 8268 | |
| 8269 | /* |
| 8270 | * Set "blackhole". Only legal at options level; there is |
| 8271 | * no default. |
| 8272 | */ |
| 8273 | CHECK(configure_view_acl(NULL, config, NULL, "blackhole" , NULL, |
| 8274 | named_g_aclconfctx, named_g_mctx, |
| 8275 | &server->sctx->blackholeacl)); |
| 8276 | if (server->sctx->blackholeacl != NULL) { |
| 8277 | dns_dispatchmgr_setblackhole(named_g_dispatchmgr, |
| 8278 | server->sctx->blackholeacl); |
| 8279 | } |
| 8280 | |
| 8281 | /* |
| 8282 | * Set "keep-response-order". Only legal at options or |
| 8283 | * global defaults level. |
| 8284 | */ |
| 8285 | CHECK(configure_view_acl(NULL, config, named_g_config, |
| 8286 | "keep-response-order" , NULL, |
| 8287 | named_g_aclconfctx, named_g_mctx, |
| 8288 | &server->sctx->keepresporder)); |
| 8289 | |
| 8290 | obj = NULL; |
| 8291 | result = named_config_get(maps, "match-mapped-addresses" , &obj); |
| 8292 | INSIST(result == ISC_R_SUCCESS); |
| 8293 | env->match_mapped = cfg_obj_asboolean(obj); |
| 8294 | |
| 8295 | CHECKM(named_statschannels_configure(named_g_server, config, |
| 8296 | named_g_aclconfctx), |
| 8297 | "configuring statistics server(s)" ); |
| 8298 | |
| 8299 | obj = NULL; |
| 8300 | result = named_config_get(maps, "tcp-initial-timeout" , &obj); |
| 8301 | INSIST(result == ISC_R_SUCCESS); |
| 8302 | initial = cfg_obj_asuint32(obj); |
| 8303 | if (initial > 1200) { |
| 8304 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8305 | "tcp-initial-timeout value is out of range: " |
| 8306 | "lowering to 1200" ); |
| 8307 | initial = 1200; |
| 8308 | } else if (initial < 25) { |
| 8309 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8310 | "tcp-initial-timeout value is out of range: " |
| 8311 | "raising to 25" ); |
| 8312 | initial = 25; |
| 8313 | } |
| 8314 | |
| 8315 | obj = NULL; |
| 8316 | result = named_config_get(maps, "tcp-idle-timeout" , &obj); |
| 8317 | INSIST(result == ISC_R_SUCCESS); |
| 8318 | idle = cfg_obj_asuint32(obj); |
| 8319 | if (idle > 1200) { |
| 8320 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8321 | "tcp-idle-timeout value is out of range: " |
| 8322 | "lowering to 1200" ); |
| 8323 | idle = 1200; |
| 8324 | } else if (idle < 1) { |
| 8325 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8326 | "tcp-idle-timeout value is out of range: " |
| 8327 | "raising to 1" ); |
| 8328 | idle = 1; |
| 8329 | } |
| 8330 | |
| 8331 | obj = NULL; |
| 8332 | result = named_config_get(maps, "tcp-keepalive-timeout" , &obj); |
| 8333 | INSIST(result == ISC_R_SUCCESS); |
| 8334 | keepalive = cfg_obj_asuint32(obj); |
| 8335 | if (keepalive > MAX_TCP_TIMEOUT) { |
| 8336 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8337 | "tcp-keepalive-timeout value is out of range: " |
| 8338 | "lowering to %u" , MAX_TCP_TIMEOUT); |
| 8339 | keepalive = MAX_TCP_TIMEOUT; |
| 8340 | } else if (keepalive < 1) { |
| 8341 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8342 | "tcp-keepalive-timeout value is out of range: " |
| 8343 | "raising to 1" ); |
| 8344 | keepalive = 1; |
| 8345 | } |
| 8346 | |
| 8347 | obj = NULL; |
| 8348 | result = named_config_get(maps, "tcp-advertised-timeout" , &obj); |
| 8349 | INSIST(result == ISC_R_SUCCESS); |
| 8350 | advertised = cfg_obj_asuint32(obj); |
| 8351 | if (advertised > MAX_TCP_TIMEOUT) { |
| 8352 | cfg_obj_log(obj, named_g_lctx, ISC_LOG_WARNING, |
| 8353 | "tcp-advertized-timeout value is out of range: " |
| 8354 | "lowering to %u" , MAX_TCP_TIMEOUT); |
| 8355 | advertised = MAX_TCP_TIMEOUT; |
| 8356 | } |
| 8357 | |
| 8358 | ns_server_settimeouts(named_g_server->sctx, |
| 8359 | initial, idle, keepalive, advertised); |
| 8360 | |
| 8361 | /* |
| 8362 | * Configure sets of UDP query source ports. |
| 8363 | */ |
| 8364 | CHECKM(isc_portset_create(named_g_mctx, &v4portset), |
| 8365 | "creating UDP port set" ); |
| 8366 | CHECKM(isc_portset_create(named_g_mctx, &v6portset), |
| 8367 | "creating UDP port set" ); |
| 8368 | |
| 8369 | usev4ports = NULL; |
| 8370 | usev6ports = NULL; |
| 8371 | avoidv4ports = NULL; |
| 8372 | avoidv6ports = NULL; |
| 8373 | |
| 8374 | (void)named_config_get(maps, "use-v4-udp-ports" , &usev4ports); |
| 8375 | if (usev4ports != NULL) { |
| 8376 | portset_fromconf(v4portset, usev4ports, true); |
| 8377 | } else { |
| 8378 | CHECKM(isc_net_getudpportrange(AF_INET, &udpport_low, |
| 8379 | &udpport_high), |
| 8380 | "get the default UDP/IPv4 port range" ); |
| 8381 | if (udpport_low == udpport_high) { |
| 8382 | isc_portset_add(v4portset, udpport_low); |
| 8383 | } else { |
| 8384 | isc_portset_addrange(v4portset, udpport_low, |
| 8385 | udpport_high); |
| 8386 | } |
| 8387 | if (!ns_server_getoption(server->sctx, NS_SERVER_DISABLE4)) { |
| 8388 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8389 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8390 | "using default UDP/IPv4 port range: " |
| 8391 | "[%d, %d]" , udpport_low, udpport_high); |
| 8392 | } |
| 8393 | } |
| 8394 | (void)named_config_get(maps, "avoid-v4-udp-ports" , &avoidv4ports); |
| 8395 | if (avoidv4ports != NULL) { |
| 8396 | portset_fromconf(v4portset, avoidv4ports, false); |
| 8397 | } |
| 8398 | |
| 8399 | (void)named_config_get(maps, "use-v6-udp-ports" , &usev6ports); |
| 8400 | if (usev6ports != NULL) { |
| 8401 | portset_fromconf(v6portset, usev6ports, true); |
| 8402 | } else { |
| 8403 | CHECKM(isc_net_getudpportrange(AF_INET6, &udpport_low, |
| 8404 | &udpport_high), |
| 8405 | "get the default UDP/IPv6 port range" ); |
| 8406 | if (udpport_low == udpport_high) { |
| 8407 | isc_portset_add(v6portset, udpport_low); |
| 8408 | } else { |
| 8409 | isc_portset_addrange(v6portset, udpport_low, |
| 8410 | udpport_high); |
| 8411 | } |
| 8412 | if (!ns_server_getoption(server->sctx, NS_SERVER_DISABLE6)) { |
| 8413 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8414 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8415 | "using default UDP/IPv6 port range: " |
| 8416 | "[%d, %d]" , udpport_low, udpport_high); |
| 8417 | } |
| 8418 | } |
| 8419 | (void)named_config_get(maps, "avoid-v6-udp-ports" , &avoidv6ports); |
| 8420 | if (avoidv6ports != NULL) { |
| 8421 | portset_fromconf(v6portset, avoidv6ports, false); |
| 8422 | } |
| 8423 | |
| 8424 | dns_dispatchmgr_setavailports(named_g_dispatchmgr, v4portset, |
| 8425 | v6portset); |
| 8426 | |
| 8427 | /* |
| 8428 | * Set the EDNS UDP size when we don't match a view. |
| 8429 | */ |
| 8430 | obj = NULL; |
| 8431 | result = named_config_get(maps, "edns-udp-size" , &obj); |
| 8432 | INSIST(result == ISC_R_SUCCESS); |
| 8433 | udpsize = cfg_obj_asuint32(obj); |
| 8434 | if (udpsize < 512) { |
| 8435 | udpsize = 512; |
| 8436 | } |
| 8437 | if (udpsize > 4096) { |
| 8438 | udpsize = 4096; |
| 8439 | } |
| 8440 | server->sctx->udpsize = (uint16_t)udpsize; |
| 8441 | |
| 8442 | /* Set the transfer message size for TCP */ |
| 8443 | obj = NULL; |
| 8444 | result = named_config_get(maps, "transfer-message-size" , &obj); |
| 8445 | INSIST(result == ISC_R_SUCCESS); |
| 8446 | transfer_message_size = cfg_obj_asuint32(obj); |
| 8447 | if (transfer_message_size < 512) { |
| 8448 | transfer_message_size = 512; |
| 8449 | } else if (transfer_message_size > 65535) { |
| 8450 | transfer_message_size = 65535; |
| 8451 | } |
| 8452 | server->sctx->transfer_tcp_message_size = |
| 8453 | (uint16_t) transfer_message_size; |
| 8454 | |
| 8455 | /* |
| 8456 | * Configure the zone manager. |
| 8457 | */ |
| 8458 | obj = NULL; |
| 8459 | result = named_config_get(maps, "transfers-in" , &obj); |
| 8460 | INSIST(result == ISC_R_SUCCESS); |
| 8461 | dns_zonemgr_settransfersin(server->zonemgr, cfg_obj_asuint32(obj)); |
| 8462 | |
| 8463 | obj = NULL; |
| 8464 | result = named_config_get(maps, "transfers-per-ns" , &obj); |
| 8465 | INSIST(result == ISC_R_SUCCESS); |
| 8466 | dns_zonemgr_settransfersperns(server->zonemgr, cfg_obj_asuint32(obj)); |
| 8467 | |
| 8468 | obj = NULL; |
| 8469 | result = named_config_get(maps, "notify-rate" , &obj); |
| 8470 | INSIST(result == ISC_R_SUCCESS); |
| 8471 | dns_zonemgr_setnotifyrate(server->zonemgr, cfg_obj_asuint32(obj)); |
| 8472 | |
| 8473 | obj = NULL; |
| 8474 | result = named_config_get(maps, "startup-notify-rate" , &obj); |
| 8475 | INSIST(result == ISC_R_SUCCESS); |
| 8476 | dns_zonemgr_setstartupnotifyrate(server->zonemgr, |
| 8477 | cfg_obj_asuint32(obj)); |
| 8478 | |
| 8479 | obj = NULL; |
| 8480 | result = named_config_get(maps, "serial-query-rate" , &obj); |
| 8481 | INSIST(result == ISC_R_SUCCESS); |
| 8482 | dns_zonemgr_setserialqueryrate(server->zonemgr, cfg_obj_asuint32(obj)); |
| 8483 | |
| 8484 | /* |
| 8485 | * Determine which port to use for listening for incoming connections. |
| 8486 | */ |
| 8487 | if (named_g_port != 0) { |
| 8488 | listen_port = named_g_port; |
| 8489 | } else { |
| 8490 | CHECKM(named_config_getport(config, &listen_port), "port" ); |
| 8491 | } |
| 8492 | |
| 8493 | /* |
| 8494 | * Determing the default DSCP code point. |
| 8495 | */ |
| 8496 | CHECKM(named_config_getdscp(config, &named_g_dscp), "dscp" ); |
| 8497 | |
| 8498 | /* |
| 8499 | * Find the listen queue depth. |
| 8500 | */ |
| 8501 | obj = NULL; |
| 8502 | result = named_config_get(maps, "tcp-listen-queue" , &obj); |
| 8503 | INSIST(result == ISC_R_SUCCESS); |
| 8504 | backlog = cfg_obj_asuint32(obj); |
| 8505 | if ((backlog > 0) && (backlog < 10)) { |
| 8506 | backlog = 10; |
| 8507 | } |
| 8508 | ns_interfacemgr_setbacklog(server->interfacemgr, backlog); |
| 8509 | |
| 8510 | /* |
| 8511 | * Configure the interface manager according to the "listen-on" |
| 8512 | * statement. |
| 8513 | */ |
| 8514 | { |
| 8515 | const cfg_obj_t *clistenon = NULL; |
| 8516 | ns_listenlist_t *listenon = NULL; |
| 8517 | |
| 8518 | clistenon = NULL; |
| 8519 | /* |
| 8520 | * Even though listen-on is present in the default |
| 8521 | * configuration, this way is easier. |
| 8522 | */ |
| 8523 | if (options != NULL) { |
| 8524 | (void)cfg_map_get(options, "listen-on" , &clistenon); |
| 8525 | } |
| 8526 | if (clistenon != NULL) { |
| 8527 | /* check return code? */ |
| 8528 | (void)ns_listenlist_fromconfig(clistenon, config, |
| 8529 | named_g_aclconfctx, |
| 8530 | named_g_mctx, AF_INET, |
| 8531 | &listenon); |
| 8532 | } else { |
| 8533 | /* |
| 8534 | * Not specified, use default. |
| 8535 | */ |
| 8536 | CHECK(ns_listenlist_default(named_g_mctx, listen_port, |
| 8537 | -1, true, &listenon)); |
| 8538 | } |
| 8539 | if (listenon != NULL) { |
| 8540 | ns_interfacemgr_setlistenon4(server->interfacemgr, |
| 8541 | listenon); |
| 8542 | ns_listenlist_detach(&listenon); |
| 8543 | } |
| 8544 | } |
| 8545 | /* |
| 8546 | * Ditto for IPv6. |
| 8547 | */ |
| 8548 | { |
| 8549 | const cfg_obj_t *clistenon = NULL; |
| 8550 | ns_listenlist_t *listenon = NULL; |
| 8551 | |
| 8552 | if (options != NULL) { |
| 8553 | (void)cfg_map_get(options, "listen-on-v6" , &clistenon); |
| 8554 | } |
| 8555 | if (clistenon != NULL) { |
| 8556 | /* check return code? */ |
| 8557 | (void)ns_listenlist_fromconfig(clistenon, config, |
| 8558 | named_g_aclconfctx, |
| 8559 | named_g_mctx, AF_INET6, |
| 8560 | &listenon); |
| 8561 | } else { |
| 8562 | /* |
| 8563 | * Not specified, use default. |
| 8564 | */ |
| 8565 | CHECK(ns_listenlist_default(named_g_mctx, listen_port, |
| 8566 | -1, true, &listenon)); |
| 8567 | } |
| 8568 | if (listenon != NULL) { |
| 8569 | ns_interfacemgr_setlistenon6(server->interfacemgr, |
| 8570 | listenon); |
| 8571 | ns_listenlist_detach(&listenon); |
| 8572 | } |
| 8573 | } |
| 8574 | |
| 8575 | /* |
| 8576 | * Rescan the interface list to pick up changes in the |
| 8577 | * listen-on option. It's important that we do this before we try |
| 8578 | * to configure the query source, since the dispatcher we use might |
| 8579 | * be shared with an interface. |
| 8580 | */ |
| 8581 | result = ns_interfacemgr_scan(server->interfacemgr, true); |
| 8582 | |
| 8583 | /* |
| 8584 | * Check that named is able to TCP listen on at least one |
| 8585 | * interface. Otherwise, another named process could be running |
| 8586 | * and we should fail. |
| 8587 | */ |
| 8588 | if (first_time && (result == ISC_R_ADDRINUSE)) { |
| 8589 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8590 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 8591 | "unable to listen on any configured interfaces" ); |
| 8592 | result = ISC_R_FAILURE; |
| 8593 | goto cleanup; |
| 8594 | } |
| 8595 | |
| 8596 | /* |
| 8597 | * Arrange for further interface scanning to occur periodically |
| 8598 | * as specified by the "interface-interval" option. |
| 8599 | */ |
| 8600 | obj = NULL; |
| 8601 | result = named_config_get(maps, "interface-interval" , &obj); |
| 8602 | INSIST(result == ISC_R_SUCCESS); |
| 8603 | interface_interval = cfg_obj_asuint32(obj) * 60; |
| 8604 | if (interface_interval == 0) { |
| 8605 | CHECK(isc_timer_reset(server->interface_timer, |
| 8606 | isc_timertype_inactive, |
| 8607 | NULL, NULL, true)); |
| 8608 | } else if (server->interface_interval != interface_interval) { |
| 8609 | isc_interval_set(&interval, interface_interval, 0); |
| 8610 | CHECK(isc_timer_reset(server->interface_timer, |
| 8611 | isc_timertype_ticker, |
| 8612 | NULL, &interval, false)); |
| 8613 | } |
| 8614 | server->interface_interval = interface_interval; |
| 8615 | |
| 8616 | /* |
| 8617 | * Enable automatic interface scans. |
| 8618 | */ |
| 8619 | obj = NULL; |
| 8620 | result = named_config_get(maps, "automatic-interface-scan" , &obj); |
| 8621 | INSIST(result == ISC_R_SUCCESS); |
| 8622 | server->sctx->interface_auto = cfg_obj_asboolean(obj); |
| 8623 | |
| 8624 | /* |
| 8625 | * Configure the dialup heartbeat timer. |
| 8626 | */ |
| 8627 | obj = NULL; |
| 8628 | result = named_config_get(maps, "heartbeat-interval" , &obj); |
| 8629 | INSIST(result == ISC_R_SUCCESS); |
| 8630 | heartbeat_interval = cfg_obj_asuint32(obj) * 60; |
| 8631 | if (heartbeat_interval == 0) { |
| 8632 | CHECK(isc_timer_reset(server->heartbeat_timer, |
| 8633 | isc_timertype_inactive, |
| 8634 | NULL, NULL, true)); |
| 8635 | } else if (server->heartbeat_interval != heartbeat_interval) { |
| 8636 | isc_interval_set(&interval, heartbeat_interval, 0); |
| 8637 | CHECK(isc_timer_reset(server->heartbeat_timer, |
| 8638 | isc_timertype_ticker, |
| 8639 | NULL, &interval, false)); |
| 8640 | } |
| 8641 | server->heartbeat_interval = heartbeat_interval; |
| 8642 | |
| 8643 | isc_interval_set(&interval, 1200, 0); |
| 8644 | CHECK(isc_timer_reset(server->pps_timer, isc_timertype_ticker, NULL, |
| 8645 | &interval, false)); |
| 8646 | |
| 8647 | isc_interval_set(&interval, named_g_tat_interval, 0); |
| 8648 | CHECK(isc_timer_reset(server->tat_timer, isc_timertype_ticker, NULL, |
| 8649 | &interval, false)); |
| 8650 | |
| 8651 | /* |
| 8652 | * Write the PID file. |
| 8653 | */ |
| 8654 | obj = NULL; |
| 8655 | if (named_config_get(maps, "pid-file" , &obj) == ISC_R_SUCCESS) { |
| 8656 | if (cfg_obj_isvoid(obj)) { |
| 8657 | named_os_writepidfile(NULL, first_time); |
| 8658 | } else { |
| 8659 | named_os_writepidfile(cfg_obj_asstring(obj), |
| 8660 | first_time); |
| 8661 | } |
| 8662 | } else { |
| 8663 | named_os_writepidfile(named_g_defaultpidfile, first_time); |
| 8664 | } |
| 8665 | |
| 8666 | /* |
| 8667 | * Configure the server-wide session key. This must be done before |
| 8668 | * configure views because zone configuration may need to know |
| 8669 | * session-keyname. |
| 8670 | * |
| 8671 | * Failure of session key generation isn't fatal at this time; if it |
| 8672 | * turns out that a session key is really needed but doesn't exist, |
| 8673 | * we'll treat it as a fatal error then. |
| 8674 | */ |
| 8675 | (void)configure_session_key(maps, server, named_g_mctx); |
| 8676 | |
| 8677 | views = NULL; |
| 8678 | (void)cfg_map_get(config, "view" , &views); |
| 8679 | |
| 8680 | /* |
| 8681 | * Create the views and count all the configured zones in |
| 8682 | * order to correctly size the zone manager's task table. |
| 8683 | * (We only count zones for configured views; the built-in |
| 8684 | * "bind" view can be ignored as it only adds a negligible |
| 8685 | * number of zones.) |
| 8686 | * |
| 8687 | * If we're allowing new zones, we need to be able to find the |
| 8688 | * new zone file and count those as well. So we setup the new |
| 8689 | * zone configuration context, but otherwise view configuration |
| 8690 | * waits until after the zone manager's task list has been sized. |
| 8691 | */ |
| 8692 | for (element = cfg_list_first(views); |
| 8693 | element != NULL; |
| 8694 | element = cfg_list_next(element)) |
| 8695 | { |
| 8696 | cfg_obj_t *vconfig = cfg_listelt_value(element); |
| 8697 | const cfg_obj_t *voptions = cfg_tuple_get(vconfig, "options" ); |
| 8698 | int nzf_num_zones; |
| 8699 | |
| 8700 | view = NULL; |
| 8701 | |
| 8702 | CHECK(create_view(vconfig, &viewlist, &view)); |
| 8703 | INSIST(view != NULL); |
| 8704 | |
| 8705 | num_zones += count_zones(voptions); |
| 8706 | |
| 8707 | CHECK(setup_newzones(view, config, vconfig, conf_parser, |
| 8708 | named_g_aclconfctx, &nzf_num_zones)); |
| 8709 | num_zones += nzf_num_zones; |
| 8710 | |
| 8711 | dns_view_detach(&view); |
| 8712 | } |
| 8713 | |
| 8714 | /* |
| 8715 | * If there were no explicit views then we do the default |
| 8716 | * view here. |
| 8717 | */ |
| 8718 | if (views == NULL) { |
| 8719 | int nzf_num_zones; |
| 8720 | |
| 8721 | CHECK(create_view(NULL, &viewlist, &view)); |
| 8722 | INSIST(view != NULL); |
| 8723 | |
| 8724 | num_zones = count_zones(config); |
| 8725 | |
| 8726 | CHECK(setup_newzones(view, config, NULL, conf_parser, |
| 8727 | named_g_aclconfctx, &nzf_num_zones)); |
| 8728 | num_zones += nzf_num_zones; |
| 8729 | |
| 8730 | dns_view_detach(&view); |
| 8731 | } |
| 8732 | |
| 8733 | /* |
| 8734 | * Zones have been counted; set the zone manager task pool size. |
| 8735 | */ |
| 8736 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8737 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8738 | "sizing zone task pool based on %d zones" , num_zones); |
| 8739 | CHECK(dns_zonemgr_setsize(named_g_server->zonemgr, num_zones)); |
| 8740 | |
| 8741 | /* |
| 8742 | * Configure and freeze all explicit views. Explicit |
| 8743 | * views that have zones were already created at parsing |
| 8744 | * time, but views with no zones must be created here. |
| 8745 | */ |
| 8746 | for (element = cfg_list_first(views); |
| 8747 | element != NULL; |
| 8748 | element = cfg_list_next(element)) |
| 8749 | { |
| 8750 | cfg_obj_t *vconfig = cfg_listelt_value(element); |
| 8751 | |
| 8752 | view = NULL; |
| 8753 | CHECK(find_view(vconfig, &viewlist, &view)); |
| 8754 | CHECK(configure_view(view, &viewlist, config, vconfig, |
| 8755 | &cachelist, bindkeys, named_g_mctx, |
| 8756 | named_g_aclconfctx, true)); |
| 8757 | dns_view_freeze(view); |
| 8758 | dns_view_detach(&view); |
| 8759 | } |
| 8760 | |
| 8761 | /* |
| 8762 | * Make sure we have a default view if and only if there |
| 8763 | * were no explicit views. |
| 8764 | */ |
| 8765 | if (views == NULL) { |
| 8766 | view = NULL; |
| 8767 | CHECK(find_view(NULL, &viewlist, &view)); |
| 8768 | CHECK(configure_view(view, &viewlist, config, NULL, |
| 8769 | &cachelist, bindkeys, |
| 8770 | named_g_mctx, named_g_aclconfctx, |
| 8771 | true)); |
| 8772 | dns_view_freeze(view); |
| 8773 | dns_view_detach(&view); |
| 8774 | } |
| 8775 | |
| 8776 | /* |
| 8777 | * Create (or recreate) the built-in views. |
| 8778 | */ |
| 8779 | builtin_views = NULL; |
| 8780 | RUNTIME_CHECK(cfg_map_get(named_g_config, "view" , |
| 8781 | &builtin_views) == ISC_R_SUCCESS); |
| 8782 | for (element = cfg_list_first(builtin_views); |
| 8783 | element != NULL; |
| 8784 | element = cfg_list_next(element)) |
| 8785 | { |
| 8786 | cfg_obj_t *vconfig = cfg_listelt_value(element); |
| 8787 | |
| 8788 | CHECK(create_view(vconfig, &builtin_viewlist, &view)); |
| 8789 | CHECK(configure_view(view, &viewlist, config, vconfig, |
| 8790 | &cachelist, bindkeys, |
| 8791 | named_g_mctx, named_g_aclconfctx, |
| 8792 | false)); |
| 8793 | dns_view_freeze(view); |
| 8794 | dns_view_detach(&view); |
| 8795 | view = NULL; |
| 8796 | } |
| 8797 | |
| 8798 | /* Now combine the two viewlists into one */ |
| 8799 | ISC_LIST_APPENDLIST(viewlist, builtin_viewlist, link); |
| 8800 | |
| 8801 | /* |
| 8802 | * Commit any dns_zone_setview() calls on all zones in the new |
| 8803 | * view. |
| 8804 | */ |
| 8805 | for (view = ISC_LIST_HEAD(viewlist); |
| 8806 | view != NULL; |
| 8807 | view = ISC_LIST_NEXT(view, link)) |
| 8808 | { |
| 8809 | dns_view_setviewcommit(view); |
| 8810 | } |
| 8811 | |
| 8812 | /* Swap our new view list with the production one. */ |
| 8813 | tmpviewlist = server->viewlist; |
| 8814 | server->viewlist = viewlist; |
| 8815 | viewlist = tmpviewlist; |
| 8816 | |
| 8817 | /* Make the view list available to each of the views */ |
| 8818 | view = ISC_LIST_HEAD(server->viewlist); |
| 8819 | while (view != NULL) { |
| 8820 | view->viewlist = &server->viewlist; |
| 8821 | view = ISC_LIST_NEXT(view, link); |
| 8822 | } |
| 8823 | |
| 8824 | /* Swap our new cache list with the production one. */ |
| 8825 | tmpcachelist = server->cachelist; |
| 8826 | server->cachelist = cachelist; |
| 8827 | cachelist = tmpcachelist; |
| 8828 | |
| 8829 | /* Load the TKEY information from the configuration. */ |
| 8830 | if (options != NULL) { |
| 8831 | dns_tkeyctx_t *t = NULL; |
| 8832 | CHECKM(named_tkeyctx_fromconfig(options, named_g_mctx, &t), |
| 8833 | "configuring TKEY" ); |
| 8834 | if (server->sctx->tkeyctx != NULL) { |
| 8835 | dns_tkeyctx_destroy(&server->sctx->tkeyctx); |
| 8836 | } |
| 8837 | server->sctx->tkeyctx = t; |
| 8838 | } |
| 8839 | |
| 8840 | /* |
| 8841 | * Bind the control port(s). |
| 8842 | */ |
| 8843 | CHECKM(named_controls_configure(named_g_server->controls, config, |
| 8844 | named_g_aclconfctx), |
| 8845 | "binding control channel(s)" ); |
| 8846 | |
| 8847 | #ifdef HAVE_LMDB |
| 8848 | /* |
| 8849 | * If we're using LMDB, we may have created newzones databases |
| 8850 | * as root, making it impossible to reopen them later after |
| 8851 | * switching to a new userid. We close them now, and reopen |
| 8852 | * after relinquishing privileges them. |
| 8853 | */ |
| 8854 | if (first_time) { |
| 8855 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 8856 | view != NULL; |
| 8857 | view = ISC_LIST_NEXT(view, link)) |
| 8858 | { |
| 8859 | nzd_env_close(view); |
| 8860 | } |
| 8861 | } |
| 8862 | #endif /* HAVE_LMDB */ |
| 8863 | |
| 8864 | /* |
| 8865 | * Relinquish root privileges. |
| 8866 | */ |
| 8867 | if (first_time) { |
| 8868 | named_os_changeuser(); |
| 8869 | } |
| 8870 | |
| 8871 | #if 0 |
| 8872 | /* |
| 8873 | * Check that the working directory is writable. |
| 8874 | */ |
| 8875 | if (!isc_file_isdirwritable("." )) { |
| 8876 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8877 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 8878 | "the working directory is not writable" ); |
| 8879 | result = ISC_R_NOPERM; |
| 8880 | goto cleanup; |
| 8881 | } |
| 8882 | #endif |
| 8883 | #ifdef HAVE_LMDB |
| 8884 | /* |
| 8885 | * Reopen NZD databases. |
| 8886 | */ |
| 8887 | if (first_time) { |
| 8888 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 8889 | view != NULL; |
| 8890 | view = ISC_LIST_NEXT(view, link)) |
| 8891 | { |
| 8892 | nzd_env_reopen(view); |
| 8893 | } |
| 8894 | } |
| 8895 | #endif /* HAVE_LMDB */ |
| 8896 | |
| 8897 | /* |
| 8898 | * Configure the logging system. |
| 8899 | * |
| 8900 | * Do this after changing UID to make sure that any log |
| 8901 | * files specified in named.conf get created by the |
| 8902 | * unprivileged user, not root. |
| 8903 | */ |
| 8904 | if (named_g_logstderr) { |
| 8905 | const cfg_obj_t *logobj = NULL; |
| 8906 | |
| 8907 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8908 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 8909 | "not using config file logging " |
| 8910 | "statement for logging due to " |
| 8911 | "-g option" ); |
| 8912 | |
| 8913 | (void)cfg_map_get(config, "logging" , &logobj); |
| 8914 | if (logobj != NULL) { |
| 8915 | result = named_logconfig(NULL, logobj); |
| 8916 | if (result != ISC_R_SUCCESS) { |
| 8917 | isc_log_write(named_g_lctx, |
| 8918 | NAMED_LOGCATEGORY_GENERAL, |
| 8919 | NAMED_LOGMODULE_SERVER, |
| 8920 | ISC_LOG_ERROR, |
| 8921 | "checking logging configuration " |
| 8922 | "failed: %s" , |
| 8923 | isc_result_totext(result)); |
| 8924 | goto cleanup; |
| 8925 | } |
| 8926 | } |
| 8927 | } else { |
| 8928 | const cfg_obj_t *logobj = NULL; |
| 8929 | |
| 8930 | CHECKM(isc_logconfig_create(named_g_lctx, &logc), |
| 8931 | "creating new logging configuration" ); |
| 8932 | |
| 8933 | logobj = NULL; |
| 8934 | (void)cfg_map_get(config, "logging" , &logobj); |
| 8935 | if (logobj != NULL) { |
| 8936 | CHECKM(named_logconfig(logc, logobj), |
| 8937 | "configuring logging" ); |
| 8938 | } else { |
| 8939 | CHECKM(named_log_setdefaultchannels(logc), |
| 8940 | "setting up default logging channels" ); |
| 8941 | CHECKM(named_log_setunmatchedcategory(logc), |
| 8942 | "setting up default 'category unmatched'" ); |
| 8943 | CHECKM(named_log_setdefaultcategory(logc), |
| 8944 | "setting up default 'category default'" ); |
| 8945 | } |
| 8946 | |
| 8947 | CHECKM(isc_logconfig_use(named_g_lctx, logc), |
| 8948 | "installing logging configuration" ); |
| 8949 | logc = NULL; |
| 8950 | |
| 8951 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 8952 | NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1), |
| 8953 | "now using logging configuration from " |
| 8954 | "config file" ); |
| 8955 | } |
| 8956 | |
| 8957 | /* |
| 8958 | * Set the default value of the query logging flag depending |
| 8959 | * whether a "queries" category has been defined. This is |
| 8960 | * a disgusting hack, but we need to do this for BIND 8 |
| 8961 | * compatibility. |
| 8962 | */ |
| 8963 | if (first_time) { |
| 8964 | const cfg_obj_t *logobj = NULL; |
| 8965 | const cfg_obj_t *categories = NULL; |
| 8966 | |
| 8967 | obj = NULL; |
| 8968 | if (named_config_get(maps, "querylog" , &obj) == ISC_R_SUCCESS) { |
| 8969 | ns_server_setoption(server->sctx, |
| 8970 | NS_SERVER_LOGQUERIES, |
| 8971 | cfg_obj_asboolean(obj)); |
| 8972 | } else { |
| 8973 | |
| 8974 | (void)cfg_map_get(config, "logging" , &logobj); |
| 8975 | if (logobj != NULL) |
| 8976 | (void)cfg_map_get(logobj, "category" , |
| 8977 | &categories); |
| 8978 | if (categories != NULL) { |
| 8979 | for (element = cfg_list_first(categories); |
| 8980 | element != NULL; |
| 8981 | element = cfg_list_next(element)) |
| 8982 | { |
| 8983 | const cfg_obj_t *catobj; |
| 8984 | const char *str; |
| 8985 | |
| 8986 | obj = cfg_listelt_value(element); |
| 8987 | catobj = cfg_tuple_get(obj, "name" ); |
| 8988 | str = cfg_obj_asstring(catobj); |
| 8989 | if (strcasecmp(str, "queries" ) == 0) |
| 8990 | ns_server_setoption( |
| 8991 | server->sctx, |
| 8992 | NS_SERVER_LOGQUERIES, |
| 8993 | true); |
| 8994 | } |
| 8995 | } |
| 8996 | } |
| 8997 | } |
| 8998 | |
| 8999 | obj = NULL; |
| 9000 | if (options != NULL && |
| 9001 | cfg_map_get(options, "memstatistics" , &obj) == ISC_R_SUCCESS) |
| 9002 | { |
| 9003 | named_g_memstatistics = cfg_obj_asboolean(obj); |
| 9004 | } else { |
| 9005 | named_g_memstatistics = |
| 9006 | ((isc_mem_debugging & ISC_MEM_DEBUGRECORD) != 0); |
| 9007 | } |
| 9008 | |
| 9009 | obj = NULL; |
| 9010 | if (named_config_get(maps, "memstatistics-file" , &obj) == ISC_R_SUCCESS) |
| 9011 | { |
| 9012 | named_main_setmemstats(cfg_obj_asstring(obj)); |
| 9013 | } else if (named_g_memstatistics) { |
| 9014 | named_main_setmemstats("named.memstats" ); |
| 9015 | } else { |
| 9016 | named_main_setmemstats(NULL); |
| 9017 | } |
| 9018 | |
| 9019 | obj = NULL; |
| 9020 | result = named_config_get(maps, "statistics-file" , &obj); |
| 9021 | INSIST(result == ISC_R_SUCCESS); |
| 9022 | CHECKM(setstring(server, &server->statsfile, cfg_obj_asstring(obj)), |
| 9023 | "strdup" ); |
| 9024 | |
| 9025 | obj = NULL; |
| 9026 | result = named_config_get(maps, "dump-file" , &obj); |
| 9027 | INSIST(result == ISC_R_SUCCESS); |
| 9028 | CHECKM(setstring(server, &server->dumpfile, cfg_obj_asstring(obj)), |
| 9029 | "strdup" ); |
| 9030 | |
| 9031 | obj = NULL; |
| 9032 | result = named_config_get(maps, "secroots-file" , &obj); |
| 9033 | INSIST(result == ISC_R_SUCCESS); |
| 9034 | CHECKM(setstring(server, &server->secrootsfile, cfg_obj_asstring(obj)), |
| 9035 | "strdup" ); |
| 9036 | |
| 9037 | obj = NULL; |
| 9038 | result = named_config_get(maps, "recursing-file" , &obj); |
| 9039 | INSIST(result == ISC_R_SUCCESS); |
| 9040 | CHECKM(setstring(server, &server->recfile, cfg_obj_asstring(obj)), |
| 9041 | "strdup" ); |
| 9042 | |
| 9043 | obj = NULL; |
| 9044 | result = named_config_get(maps, "version" , &obj); |
| 9045 | if (result == ISC_R_SUCCESS) { |
| 9046 | CHECKM(setoptstring(server, &server->version, obj), "strdup" ); |
| 9047 | server->version_set = true; |
| 9048 | } else { |
| 9049 | server->version_set = false; |
| 9050 | } |
| 9051 | |
| 9052 | obj = NULL; |
| 9053 | result = named_config_get(maps, "hostname" , &obj); |
| 9054 | if (result == ISC_R_SUCCESS) { |
| 9055 | CHECKM(setoptstring(server, &server->hostname, obj), "strdup" ); |
| 9056 | server->hostname_set = true; |
| 9057 | } else { |
| 9058 | server->hostname_set = false; |
| 9059 | } |
| 9060 | |
| 9061 | obj = NULL; |
| 9062 | result = named_config_get(maps, "server-id" , &obj); |
| 9063 | server->sctx->gethostname = NULL; |
| 9064 | if (result == ISC_R_SUCCESS && cfg_obj_isboolean(obj)) { |
| 9065 | /* The parser translates "hostname" to true */ |
| 9066 | server->sctx->gethostname = named_os_gethostname; |
| 9067 | result = ns_server_setserverid(server->sctx, NULL); |
| 9068 | } else if (result == ISC_R_SUCCESS && !cfg_obj_isvoid(obj)) { |
| 9069 | /* Found a quoted string */ |
| 9070 | result = ns_server_setserverid(server->sctx, |
| 9071 | cfg_obj_asstring(obj)); |
| 9072 | } else { |
| 9073 | result = ns_server_setserverid(server->sctx, NULL); |
| 9074 | } |
| 9075 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 9076 | |
| 9077 | obj = NULL; |
| 9078 | result = named_config_get(maps, "flush-zones-on-shutdown" , &obj); |
| 9079 | if (result == ISC_R_SUCCESS) { |
| 9080 | server->flushonshutdown = cfg_obj_asboolean(obj); |
| 9081 | } else { |
| 9082 | server->flushonshutdown = false; |
| 9083 | } |
| 9084 | |
| 9085 | obj = NULL; |
| 9086 | result = named_config_get(maps, "answer-cookie" , &obj); |
| 9087 | INSIST(result == ISC_R_SUCCESS); |
| 9088 | server->sctx->answercookie = cfg_obj_asboolean(obj); |
| 9089 | |
| 9090 | obj = NULL; |
| 9091 | result = named_config_get(maps, "cookie-algorithm" , &obj); |
| 9092 | INSIST(result == ISC_R_SUCCESS); |
| 9093 | if (strcasecmp(cfg_obj_asstring(obj), "aes" ) == 0) { |
| 9094 | server->sctx->cookiealg = ns_cookiealg_aes; |
| 9095 | } else if (strcasecmp(cfg_obj_asstring(obj), "sha1" ) == 0) { |
| 9096 | server->sctx->cookiealg = ns_cookiealg_sha1; |
| 9097 | } else if (strcasecmp(cfg_obj_asstring(obj), "sha256" ) == 0) { |
| 9098 | server->sctx->cookiealg = ns_cookiealg_sha256; |
| 9099 | } else { |
| 9100 | INSIST(0); |
| 9101 | ISC_UNREACHABLE(); |
| 9102 | } |
| 9103 | |
| 9104 | obj = NULL; |
| 9105 | result = named_config_get(maps, "cookie-secret" , &obj); |
| 9106 | if (result == ISC_R_SUCCESS) { |
| 9107 | const char *str; |
| 9108 | bool first = true; |
| 9109 | isc_buffer_t b; |
| 9110 | unsigned int usedlength; |
| 9111 | unsigned int expectedlength; |
| 9112 | |
| 9113 | for (element = cfg_list_first(obj); |
| 9114 | element != NULL; |
| 9115 | element = cfg_list_next(element)) |
| 9116 | { |
| 9117 | obj = cfg_listelt_value(element); |
| 9118 | str = cfg_obj_asstring(obj); |
| 9119 | |
| 9120 | if (first) { |
| 9121 | memset(server->sctx->secret, 0, |
| 9122 | sizeof(server->sctx->secret)); |
| 9123 | isc_buffer_init(&b, server->sctx->secret, |
| 9124 | sizeof(server->sctx->secret)); |
| 9125 | result = isc_hex_decodestring(str, &b); |
| 9126 | if (result != ISC_R_SUCCESS && |
| 9127 | result != ISC_R_NOSPACE) |
| 9128 | { |
| 9129 | goto cleanup; |
| 9130 | } |
| 9131 | first = false; |
| 9132 | } else { |
| 9133 | altsecret = isc_mem_get(server->sctx->mctx, |
| 9134 | sizeof(*altsecret)); |
| 9135 | if (altsecret == NULL) { |
| 9136 | result = ISC_R_NOMEMORY; |
| 9137 | goto cleanup; |
| 9138 | } |
| 9139 | isc_buffer_init(&b, altsecret->secret, |
| 9140 | sizeof(altsecret->secret)); |
| 9141 | result = isc_hex_decodestring(str, &b); |
| 9142 | if (result != ISC_R_SUCCESS && |
| 9143 | result != ISC_R_NOSPACE) |
| 9144 | { |
| 9145 | isc_mem_put(server->sctx->mctx, |
| 9146 | altsecret, |
| 9147 | sizeof(*altsecret)); |
| 9148 | goto cleanup; |
| 9149 | } |
| 9150 | ISC_LIST_INITANDAPPEND(altsecrets, |
| 9151 | altsecret, link); |
| 9152 | } |
| 9153 | |
| 9154 | usedlength = isc_buffer_usedlength(&b); |
| 9155 | switch (server->sctx->cookiealg) { |
| 9156 | case ns_cookiealg_aes: |
| 9157 | expectedlength = ISC_AES128_KEYLENGTH; |
| 9158 | if (usedlength != expectedlength) { |
| 9159 | CHECKM(ISC_R_RANGE, |
| 9160 | "AES cookie-secret must be " |
| 9161 | "128 bits" ); |
| 9162 | } |
| 9163 | break; |
| 9164 | case ns_cookiealg_sha1: |
| 9165 | expectedlength = |
| 9166 | isc_md_type_get_size(ISC_MD_SHA1); |
| 9167 | if (usedlength != expectedlength) { |
| 9168 | CHECKM(ISC_R_RANGE, |
| 9169 | "SHA1 cookie-secret must be " |
| 9170 | "160 bits" ); |
| 9171 | } |
| 9172 | break; |
| 9173 | case ns_cookiealg_sha256: |
| 9174 | expectedlength = |
| 9175 | isc_md_type_get_size(ISC_MD_SHA256); |
| 9176 | if (usedlength != expectedlength) { |
| 9177 | CHECKM(ISC_R_RANGE, |
| 9178 | "SHA256 cookie-secret must be " |
| 9179 | "256 bits" ); |
| 9180 | } |
| 9181 | break; |
| 9182 | } |
| 9183 | } |
| 9184 | } else { |
| 9185 | isc_nonce_buf(server->sctx->secret, |
| 9186 | sizeof(server->sctx->secret)); |
| 9187 | } |
| 9188 | |
| 9189 | /* |
| 9190 | * Swap altsecrets lists. |
| 9191 | */ |
| 9192 | tmpaltsecrets = server->sctx->altsecrets; |
| 9193 | server->sctx->altsecrets = altsecrets; |
| 9194 | altsecrets = tmpaltsecrets; |
| 9195 | |
| 9196 | (void) named_server_loadnta(server); |
| 9197 | |
| 9198 | #ifdef USE_DNSRPS |
| 9199 | /* |
| 9200 | * Start and connect to the DNS Response Policy Service |
| 9201 | * daemon, dnsrpzd, for each view that uses DNSRPS. |
| 9202 | */ |
| 9203 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 9204 | view != NULL; |
| 9205 | view = ISC_LIST_NEXT(view, link)) { |
| 9206 | result = dns_dnsrps_connect(view->rpzs); |
| 9207 | if (result != ISC_R_SUCCESS) { |
| 9208 | view = NULL; |
| 9209 | goto cleanup; |
| 9210 | } |
| 9211 | } |
| 9212 | #endif |
| 9213 | |
| 9214 | result = ISC_R_SUCCESS; |
| 9215 | |
| 9216 | cleanup: |
| 9217 | if (logc != NULL) { |
| 9218 | isc_logconfig_destroy(&logc); |
| 9219 | } |
| 9220 | |
| 9221 | if (v4portset != NULL) { |
| 9222 | isc_portset_destroy(named_g_mctx, &v4portset); |
| 9223 | } |
| 9224 | |
| 9225 | if (v6portset != NULL) { |
| 9226 | isc_portset_destroy(named_g_mctx, &v6portset); |
| 9227 | } |
| 9228 | |
| 9229 | if (conf_parser != NULL) { |
| 9230 | if (config != NULL) { |
| 9231 | cfg_obj_destroy(conf_parser, &config); |
| 9232 | } |
| 9233 | cfg_parser_destroy(&conf_parser); |
| 9234 | } |
| 9235 | |
| 9236 | if (bindkeys_parser != NULL) { |
| 9237 | if (bindkeys != NULL) { |
| 9238 | cfg_obj_destroy(bindkeys_parser, &bindkeys); |
| 9239 | } |
| 9240 | cfg_parser_destroy(&bindkeys_parser); |
| 9241 | } |
| 9242 | |
| 9243 | if (view != NULL) { |
| 9244 | dns_view_detach(&view); |
| 9245 | } |
| 9246 | |
| 9247 | ISC_LIST_APPENDLIST(viewlist, builtin_viewlist, link); |
| 9248 | |
| 9249 | /* |
| 9250 | * This cleans up either the old production view list |
| 9251 | * or our temporary list depending on whether they |
| 9252 | * were swapped above or not. |
| 9253 | */ |
| 9254 | for (view = ISC_LIST_HEAD(viewlist); |
| 9255 | view != NULL; |
| 9256 | view = view_next) { |
| 9257 | view_next = ISC_LIST_NEXT(view, link); |
| 9258 | ISC_LIST_UNLINK(viewlist, view, link); |
| 9259 | if (result == ISC_R_SUCCESS && |
| 9260 | strcmp(view->name, "_bind" ) != 0) |
| 9261 | { |
| 9262 | dns_view_setviewrevert(view); |
| 9263 | (void)dns_zt_apply(view->zonetable, false, |
| 9264 | NULL, removed, view); |
| 9265 | } |
| 9266 | dns_view_detach(&view); |
| 9267 | } |
| 9268 | |
| 9269 | /* Same cleanup for cache list. */ |
| 9270 | while ((nsc = ISC_LIST_HEAD(cachelist)) != NULL) { |
| 9271 | ISC_LIST_UNLINK(cachelist, nsc, link); |
| 9272 | dns_cache_detach(&nsc->cache); |
| 9273 | isc_mem_put(server->mctx, nsc, sizeof(*nsc)); |
| 9274 | } |
| 9275 | |
| 9276 | /* Cleanup for altsecrets list. */ |
| 9277 | while ((altsecret = ISC_LIST_HEAD(altsecrets)) != NULL) { |
| 9278 | ISC_LIST_UNLINK(altsecrets, altsecret, link); |
| 9279 | isc_mem_put(server->sctx->mctx, altsecret, sizeof(*altsecret)); |
| 9280 | } |
| 9281 | |
| 9282 | /* |
| 9283 | * Adjust the listening interfaces in accordance with the source |
| 9284 | * addresses specified in views and zones. |
| 9285 | */ |
| 9286 | if (isc_net_probeipv6() == ISC_R_SUCCESS) { |
| 9287 | adjust_interfaces(server, named_g_mctx); |
| 9288 | } |
| 9289 | |
| 9290 | /* |
| 9291 | * Record the time of most recent configuration |
| 9292 | */ |
| 9293 | tresult = isc_time_now(&named_g_configtime); |
| 9294 | if (tresult != ISC_R_SUCCESS) { |
| 9295 | named_main_earlyfatal("isc_time_now() failed: %s" , |
| 9296 | isc_result_totext(result)); |
| 9297 | } |
| 9298 | |
| 9299 | /* Relinquish exclusive access to configuration data. */ |
| 9300 | if (exclusive) { |
| 9301 | isc_task_endexclusive(server->task); |
| 9302 | } |
| 9303 | |
| 9304 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9305 | NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1), |
| 9306 | "load_configuration: %s" , |
| 9307 | isc_result_totext(result)); |
| 9308 | |
| 9309 | return (result); |
| 9310 | } |
| 9311 | |
| 9312 | static isc_result_t |
| 9313 | view_loaded(void *arg) { |
| 9314 | isc_result_t result; |
| 9315 | ns_zoneload_t *zl = (ns_zoneload_t *) arg; |
| 9316 | named_server_t *server = zl->server; |
| 9317 | bool reconfig = zl->reconfig; |
| 9318 | |
| 9319 | |
| 9320 | /* |
| 9321 | * Force zone maintenance. Do this after loading |
| 9322 | * so that we know when we need to force AXFR of |
| 9323 | * slave zones whose master files are missing. |
| 9324 | * |
| 9325 | * We use the zoneload reference counter to let us |
| 9326 | * know when all views are finished. |
| 9327 | */ |
| 9328 | if (isc_refcount_decrement(&zl->refs) == 1) { |
| 9329 | |
| 9330 | isc_refcount_destroy(&zl->refs); |
| 9331 | isc_mem_put(server->mctx, zl, sizeof (*zl)); |
| 9332 | |
| 9333 | /* |
| 9334 | * To maintain compatibility with log parsing tools that might |
| 9335 | * be looking for this string after "rndc reconfig", we keep it |
| 9336 | * as it is |
| 9337 | */ |
| 9338 | if (reconfig) { |
| 9339 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9340 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 9341 | "any newly configured zones are now loaded" ); |
| 9342 | } else { |
| 9343 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9344 | NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE, |
| 9345 | "all zones loaded" ); |
| 9346 | } |
| 9347 | |
| 9348 | CHECKFATAL(dns_zonemgr_forcemaint(server->zonemgr), |
| 9349 | "forcing zone maintenance" ); |
| 9350 | |
| 9351 | named_os_started(); |
| 9352 | |
| 9353 | #ifdef HAVE_FIPS_MODE |
| 9354 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9355 | NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE, |
| 9356 | "FIPS mode is %s" , |
| 9357 | FIPS_mode() ? "enabled" : "disabled" ); |
| 9358 | #endif |
| 9359 | server->reload_in_progress = false; |
| 9360 | |
| 9361 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9362 | NAMED_LOGMODULE_SERVER, ISC_LOG_NOTICE, |
| 9363 | "running" ); |
| 9364 | } |
| 9365 | |
| 9366 | return (ISC_R_SUCCESS); |
| 9367 | } |
| 9368 | |
| 9369 | static isc_result_t |
| 9370 | load_zones(named_server_t *server, bool init, bool reconfig) { |
| 9371 | isc_result_t result; |
| 9372 | dns_view_t *view; |
| 9373 | ns_zoneload_t *zl; |
| 9374 | |
| 9375 | zl = isc_mem_get(server->mctx, sizeof (*zl)); |
| 9376 | if (zl == NULL) |
| 9377 | return (ISC_R_NOMEMORY); |
| 9378 | zl->server = server; |
| 9379 | zl->reconfig = reconfig; |
| 9380 | |
| 9381 | result = isc_task_beginexclusive(server->task); |
| 9382 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 9383 | |
| 9384 | isc_refcount_init(&zl->refs, 1); |
| 9385 | |
| 9386 | /* |
| 9387 | * Schedule zones to be loaded from disk. |
| 9388 | */ |
| 9389 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 9390 | view != NULL; |
| 9391 | view = ISC_LIST_NEXT(view, link)) |
| 9392 | { |
| 9393 | if (view->managed_keys != NULL) { |
| 9394 | result = dns_zone_load(view->managed_keys, false); |
| 9395 | if (result != ISC_R_SUCCESS && |
| 9396 | result != DNS_R_UPTODATE && |
| 9397 | result != DNS_R_CONTINUE) |
| 9398 | goto cleanup; |
| 9399 | } |
| 9400 | if (view->redirect != NULL) { |
| 9401 | result = dns_zone_load(view->redirect, false); |
| 9402 | if (result != ISC_R_SUCCESS && |
| 9403 | result != DNS_R_UPTODATE && |
| 9404 | result != DNS_R_CONTINUE) |
| 9405 | goto cleanup; |
| 9406 | } |
| 9407 | |
| 9408 | /* |
| 9409 | * 'dns_view_asyncload' calls view_loaded if there are no |
| 9410 | * zones. |
| 9411 | */ |
| 9412 | isc_refcount_increment(&zl->refs); |
| 9413 | result = dns_view_asyncload(view, reconfig, view_loaded, zl); |
| 9414 | if (result != ISC_R_SUCCESS) { |
| 9415 | (void)isc_refcount_decrement(&zl->refs); |
| 9416 | goto cleanup; |
| 9417 | } |
| 9418 | } |
| 9419 | |
| 9420 | cleanup: |
| 9421 | if (isc_refcount_decrement(&zl->refs) == 1) { |
| 9422 | isc_refcount_destroy(&zl->refs); |
| 9423 | isc_mem_put(server->mctx, zl, sizeof (*zl)); |
| 9424 | } else if (init) { |
| 9425 | /* |
| 9426 | * Place the task manager into privileged mode. This |
| 9427 | * ensures that after we leave task-exclusive mode, no |
| 9428 | * other tasks will be able to run except for the ones |
| 9429 | * that are loading zones. (This should only be done during |
| 9430 | * the initial server setup; it isn't necessary during |
| 9431 | * a reload.) |
| 9432 | */ |
| 9433 | isc_taskmgr_setprivilegedmode(named_g_taskmgr); |
| 9434 | } |
| 9435 | |
| 9436 | isc_task_endexclusive(server->task); |
| 9437 | return (result); |
| 9438 | } |
| 9439 | |
| 9440 | static void |
| 9441 | run_server(isc_task_t *task, isc_event_t *event) { |
| 9442 | isc_result_t result; |
| 9443 | named_server_t *server = (named_server_t *)event->ev_arg; |
| 9444 | |
| 9445 | INSIST(task == server->task); |
| 9446 | |
| 9447 | isc_event_free(&event); |
| 9448 | |
| 9449 | CHECKFATAL(dns_dispatchmgr_create(named_g_mctx, &named_g_dispatchmgr), |
| 9450 | "creating dispatch manager" ); |
| 9451 | |
| 9452 | dns_dispatchmgr_setstats(named_g_dispatchmgr, server->resolverstats); |
| 9453 | |
| 9454 | #ifdef HAVE_GEOIP |
| 9455 | CHECKFATAL(ns_interfacemgr_create(named_g_mctx, server->sctx, |
| 9456 | named_g_taskmgr, named_g_timermgr, |
| 9457 | named_g_socketmgr, |
| 9458 | named_g_dispatchmgr, |
| 9459 | server->task, named_g_udpdisp, |
| 9460 | named_g_geoip, |
| 9461 | &server->interfacemgr), |
| 9462 | "creating interface manager" ); |
| 9463 | #else |
| 9464 | CHECKFATAL(ns_interfacemgr_create(named_g_mctx, server->sctx, |
| 9465 | named_g_taskmgr, named_g_timermgr, |
| 9466 | named_g_socketmgr, |
| 9467 | named_g_dispatchmgr, |
| 9468 | server->task, named_g_udpdisp, |
| 9469 | NULL, |
| 9470 | &server->interfacemgr), |
| 9471 | "creating interface manager" ); |
| 9472 | #endif |
| 9473 | |
| 9474 | CHECKFATAL(isc_timer_create(named_g_timermgr, isc_timertype_inactive, |
| 9475 | NULL, NULL, server->task, |
| 9476 | interface_timer_tick, |
| 9477 | server, &server->interface_timer), |
| 9478 | "creating interface timer" ); |
| 9479 | |
| 9480 | CHECKFATAL(isc_timer_create(named_g_timermgr, isc_timertype_inactive, |
| 9481 | NULL, NULL, server->task, |
| 9482 | heartbeat_timer_tick, |
| 9483 | server, &server->heartbeat_timer), |
| 9484 | "creating heartbeat timer" ); |
| 9485 | |
| 9486 | CHECKFATAL(isc_timer_create(named_g_timermgr, isc_timertype_inactive, |
| 9487 | NULL, NULL, server->task, tat_timer_tick, |
| 9488 | server, &server->tat_timer), |
| 9489 | "creating trust anchor telemetry timer" ); |
| 9490 | |
| 9491 | CHECKFATAL(isc_timer_create(named_g_timermgr, isc_timertype_inactive, |
| 9492 | NULL, NULL, server->task, pps_timer_tick, |
| 9493 | server, &server->pps_timer), |
| 9494 | "creating pps timer" ); |
| 9495 | |
| 9496 | CHECKFATAL(cfg_parser_create(named_g_mctx, named_g_lctx, |
| 9497 | &named_g_parser), |
| 9498 | "creating default configuration parser" ); |
| 9499 | |
| 9500 | CHECKFATAL(cfg_parser_create(named_g_mctx, named_g_lctx, |
| 9501 | &named_g_addparser), |
| 9502 | "creating additional configuration parser" ); |
| 9503 | |
| 9504 | CHECKFATAL(load_configuration(named_g_conffile, server, true), |
| 9505 | "loading configuration" ); |
| 9506 | |
| 9507 | CHECKFATAL(load_zones(server, true, false), "loading zones" ); |
| 9508 | #ifdef ENABLE_AFL |
| 9509 | named_g_run_done = true; |
| 9510 | #endif |
| 9511 | } |
| 9512 | |
| 9513 | void |
| 9514 | named_server_flushonshutdown(named_server_t *server, bool flush) { |
| 9515 | REQUIRE(NAMED_SERVER_VALID(server)); |
| 9516 | |
| 9517 | server->flushonshutdown = flush; |
| 9518 | } |
| 9519 | |
| 9520 | static void |
| 9521 | shutdown_server(isc_task_t *task, isc_event_t *event) { |
| 9522 | isc_result_t result; |
| 9523 | dns_view_t *view, *view_next; |
| 9524 | named_server_t *server = (named_server_t *)event->ev_arg; |
| 9525 | bool flush = server->flushonshutdown; |
| 9526 | named_cache_t *nsc; |
| 9527 | |
| 9528 | UNUSED(task); |
| 9529 | INSIST(task == server->task); |
| 9530 | |
| 9531 | result = isc_task_beginexclusive(server->task); |
| 9532 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 9533 | |
| 9534 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9535 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 9536 | "shutting down%s" , |
| 9537 | flush ? ": flushing changes" : "" ); |
| 9538 | |
| 9539 | named_statschannels_shutdown(server); |
| 9540 | named_controls_shutdown(server->controls); |
| 9541 | end_reserved_dispatches(server, true); |
| 9542 | cleanup_session_key(server, server->mctx); |
| 9543 | |
| 9544 | if (named_g_aclconfctx != NULL) |
| 9545 | cfg_aclconfctx_detach(&named_g_aclconfctx); |
| 9546 | |
| 9547 | cfg_obj_destroy(named_g_parser, &named_g_config); |
| 9548 | cfg_parser_destroy(&named_g_parser); |
| 9549 | cfg_parser_destroy(&named_g_addparser); |
| 9550 | |
| 9551 | (void) named_server_saventa(server); |
| 9552 | |
| 9553 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 9554 | view != NULL; |
| 9555 | view = view_next) { |
| 9556 | view_next = ISC_LIST_NEXT(view, link); |
| 9557 | ISC_LIST_UNLINK(server->viewlist, view, link); |
| 9558 | if (flush) |
| 9559 | dns_view_flushanddetach(&view); |
| 9560 | else |
| 9561 | dns_view_detach(&view); |
| 9562 | } |
| 9563 | |
| 9564 | /* |
| 9565 | * Shut down all dyndb instances. |
| 9566 | */ |
| 9567 | dns_dyndb_cleanup(true); |
| 9568 | |
| 9569 | while ((nsc = ISC_LIST_HEAD(server->cachelist)) != NULL) { |
| 9570 | ISC_LIST_UNLINK(server->cachelist, nsc, link); |
| 9571 | dns_cache_detach(&nsc->cache); |
| 9572 | isc_mem_put(server->mctx, nsc, sizeof(*nsc)); |
| 9573 | } |
| 9574 | |
| 9575 | isc_timer_detach(&server->interface_timer); |
| 9576 | isc_timer_detach(&server->heartbeat_timer); |
| 9577 | isc_timer_detach(&server->pps_timer); |
| 9578 | isc_timer_detach(&server->tat_timer); |
| 9579 | |
| 9580 | ns_interfacemgr_shutdown(server->interfacemgr); |
| 9581 | ns_interfacemgr_detach(&server->interfacemgr); |
| 9582 | |
| 9583 | dns_dispatchmgr_destroy(&named_g_dispatchmgr); |
| 9584 | |
| 9585 | dns_zonemgr_shutdown(server->zonemgr); |
| 9586 | |
| 9587 | if (named_g_sessionkey != NULL) { |
| 9588 | dns_tsigkey_detach(&named_g_sessionkey); |
| 9589 | dns_name_free(&named_g_sessionkeyname, server->mctx); |
| 9590 | } |
| 9591 | #ifdef HAVE_DNSTAP |
| 9592 | dns_dt_shutdown(); |
| 9593 | #endif |
| 9594 | #ifdef HAVE_GEOIP |
| 9595 | dns_geoip_shutdown(); |
| 9596 | #endif |
| 9597 | |
| 9598 | dns_db_detach(&server->in_roothints); |
| 9599 | |
| 9600 | isc_task_endexclusive(server->task); |
| 9601 | |
| 9602 | isc_task_detach(&server->task); |
| 9603 | |
| 9604 | isc_event_free(&event); |
| 9605 | } |
| 9606 | |
| 9607 | /*% |
| 9608 | * Find a view that matches the source and destination addresses of a query. |
| 9609 | */ |
| 9610 | static isc_result_t |
| 9611 | get_matching_view(isc_netaddr_t *srcaddr, isc_netaddr_t *destaddr, |
| 9612 | dns_message_t *message, dns_aclenv_t *env, |
| 9613 | isc_result_t *sigresult, dns_view_t **viewp) |
| 9614 | { |
| 9615 | dns_view_t *view; |
| 9616 | |
| 9617 | REQUIRE(message != NULL); |
| 9618 | REQUIRE(sigresult != NULL); |
| 9619 | REQUIRE(viewp != NULL && *viewp == NULL); |
| 9620 | |
| 9621 | for (view = ISC_LIST_HEAD(named_g_server->viewlist); |
| 9622 | view != NULL; |
| 9623 | view = ISC_LIST_NEXT(view, link)) |
| 9624 | { |
| 9625 | if (message->rdclass == view->rdclass || |
| 9626 | message->rdclass == dns_rdataclass_any) |
| 9627 | { |
| 9628 | dns_name_t *tsig = NULL; |
| 9629 | |
| 9630 | *sigresult = dns_message_rechecksig(message, view); |
| 9631 | if (*sigresult == ISC_R_SUCCESS) { |
| 9632 | dns_tsigkey_t *tsigkey; |
| 9633 | |
| 9634 | tsigkey = message->tsigkey; |
| 9635 | tsig = dns_tsigkey_identity(tsigkey); |
| 9636 | } |
| 9637 | |
| 9638 | if (dns_acl_allowed(srcaddr, tsig, |
| 9639 | view->matchclients, env) && |
| 9640 | dns_acl_allowed(destaddr, tsig, |
| 9641 | view->matchdestinations, env) && |
| 9642 | !(view->matchrecursiveonly && |
| 9643 | (message->flags & DNS_MESSAGEFLAG_RD) == 0)) |
| 9644 | { |
| 9645 | dns_view_attach(view, viewp); |
| 9646 | return (ISC_R_SUCCESS); |
| 9647 | } |
| 9648 | } |
| 9649 | } |
| 9650 | |
| 9651 | return (ISC_R_NOTFOUND); |
| 9652 | } |
| 9653 | |
| 9654 | void |
| 9655 | named_server_create(isc_mem_t *mctx, named_server_t **serverp) { |
| 9656 | isc_result_t result; |
| 9657 | named_server_t *server = isc_mem_get(mctx, sizeof(*server)); |
| 9658 | |
| 9659 | if (server == NULL) |
| 9660 | fatal("allocating server object" , ISC_R_NOMEMORY); |
| 9661 | |
| 9662 | server->mctx = mctx; |
| 9663 | server->task = NULL; |
| 9664 | server->zonemgr = NULL; |
| 9665 | |
| 9666 | #ifdef USE_DNSRPS |
| 9667 | CHECKFATAL(dns_dnsrps_server_create(), |
| 9668 | "initializing RPZ service interface" ); |
| 9669 | #endif |
| 9670 | |
| 9671 | /* Initialize server data structures. */ |
| 9672 | server->interfacemgr = NULL; |
| 9673 | ISC_LIST_INIT(server->viewlist); |
| 9674 | server->in_roothints = NULL; |
| 9675 | |
| 9676 | /* Must be first. */ |
| 9677 | CHECKFATAL(dst_lib_init(named_g_mctx, named_g_engine), |
| 9678 | "initializing DST" ); |
| 9679 | |
| 9680 | CHECKFATAL(dns_rootns_create(mctx, dns_rdataclass_in, NULL, |
| 9681 | &server->in_roothints), |
| 9682 | "setting up root hints" ); |
| 9683 | |
| 9684 | isc_mutex_init(&server->reload_event_lock); |
| 9685 | |
| 9686 | server->reload_event = |
| 9687 | isc_event_allocate(named_g_mctx, server, |
| 9688 | NAMED_EVENT_RELOAD, |
| 9689 | named_server_reload, |
| 9690 | server, |
| 9691 | sizeof(isc_event_t)); |
| 9692 | CHECKFATAL(server->reload_event == NULL ? |
| 9693 | ISC_R_NOMEMORY : ISC_R_SUCCESS, |
| 9694 | "allocating reload event" ); |
| 9695 | server->reload_in_progress = true; |
| 9696 | |
| 9697 | /* |
| 9698 | * Setup the server task, which is responsible for coordinating |
| 9699 | * startup and shutdown of the server, as well as all exclusive |
| 9700 | * tasks. |
| 9701 | */ |
| 9702 | CHECKFATAL(isc_task_create(named_g_taskmgr, 0, &server->task), |
| 9703 | "creating server task" ); |
| 9704 | isc_task_setname(server->task, "server" , server); |
| 9705 | isc_taskmgr_setexcltask(named_g_taskmgr, server->task); |
| 9706 | |
| 9707 | server->sctx = NULL; |
| 9708 | CHECKFATAL(ns_server_create(mctx, get_matching_view, |
| 9709 | &server->sctx), |
| 9710 | "creating server context" ); |
| 9711 | |
| 9712 | #ifdef HAVE_GEOIP |
| 9713 | /* |
| 9714 | * GeoIP must be initialized before the interface |
| 9715 | * manager (which includes the ACL environment) |
| 9716 | * is created |
| 9717 | */ |
| 9718 | named_geoip_init(); |
| 9719 | #endif |
| 9720 | |
| 9721 | #ifdef ENABLE_AFL |
| 9722 | server->sctx->fuzztype = named_g_fuzz_type; |
| 9723 | server->sctx->fuzznotify = named_fuzz_notify; |
| 9724 | #endif |
| 9725 | |
| 9726 | CHECKFATAL(isc_task_onshutdown(server->task, shutdown_server, server), |
| 9727 | "isc_task_onshutdown" ); |
| 9728 | CHECKFATAL(isc_app_onrun(named_g_mctx, server->task, |
| 9729 | run_server, server), |
| 9730 | "isc_app_onrun" ); |
| 9731 | |
| 9732 | server->interface_timer = NULL; |
| 9733 | server->heartbeat_timer = NULL; |
| 9734 | server->pps_timer = NULL; |
| 9735 | server->tat_timer = NULL; |
| 9736 | |
| 9737 | server->interface_interval = 0; |
| 9738 | server->heartbeat_interval = 0; |
| 9739 | |
| 9740 | CHECKFATAL(dns_zonemgr_create(named_g_mctx, named_g_taskmgr, |
| 9741 | named_g_timermgr, named_g_socketmgr, |
| 9742 | &server->zonemgr), |
| 9743 | "dns_zonemgr_create" ); |
| 9744 | CHECKFATAL(dns_zonemgr_setsize(server->zonemgr, 1000), |
| 9745 | "dns_zonemgr_setsize" ); |
| 9746 | |
| 9747 | server->statsfile = isc_mem_strdup(server->mctx, "named.stats" ); |
| 9748 | CHECKFATAL(server->statsfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS, |
| 9749 | "isc_mem_strdup" ); |
| 9750 | |
| 9751 | server->bindkeysfile = isc_mem_strdup(server->mctx, |
| 9752 | named_g_defaultbindkeys); |
| 9753 | CHECKFATAL(server->bindkeysfile == NULL ? ISC_R_NOMEMORY : |
| 9754 | ISC_R_SUCCESS, |
| 9755 | "isc_mem_strdup" ); |
| 9756 | |
| 9757 | server->dumpfile = isc_mem_strdup(server->mctx, "named_dump.db" ); |
| 9758 | CHECKFATAL(server->dumpfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS, |
| 9759 | "isc_mem_strdup" ); |
| 9760 | |
| 9761 | server->secrootsfile = isc_mem_strdup(server->mctx, "named.secroots" ); |
| 9762 | CHECKFATAL(server->secrootsfile == NULL ? ISC_R_NOMEMORY : |
| 9763 | ISC_R_SUCCESS, |
| 9764 | "isc_mem_strdup" ); |
| 9765 | |
| 9766 | server->recfile = isc_mem_strdup(server->mctx, "named.recursing" ); |
| 9767 | CHECKFATAL(server->recfile == NULL ? ISC_R_NOMEMORY : ISC_R_SUCCESS, |
| 9768 | "isc_mem_strdup" ); |
| 9769 | |
| 9770 | server->hostname_set = false; |
| 9771 | server->hostname = NULL; |
| 9772 | server->version_set = false; |
| 9773 | server->version = NULL; |
| 9774 | |
| 9775 | server->zonestats = NULL; |
| 9776 | server->resolverstats = NULL; |
| 9777 | server->sockstats = NULL; |
| 9778 | CHECKFATAL(isc_stats_create(server->mctx, &server->sockstats, |
| 9779 | isc_sockstatscounter_max), |
| 9780 | "isc_stats_create" ); |
| 9781 | isc_socketmgr_setstats(named_g_socketmgr, server->sockstats); |
| 9782 | |
| 9783 | CHECKFATAL(isc_stats_create(named_g_mctx, &server->zonestats, |
| 9784 | dns_zonestatscounter_max), |
| 9785 | "dns_stats_create (zone)" ); |
| 9786 | |
| 9787 | CHECKFATAL(isc_stats_create(named_g_mctx, &server->resolverstats, |
| 9788 | dns_resstatscounter_max), |
| 9789 | "dns_stats_create (resolver)" ); |
| 9790 | |
| 9791 | server->flushonshutdown = false; |
| 9792 | |
| 9793 | server->controls = NULL; |
| 9794 | CHECKFATAL(named_controls_create(server, &server->controls), |
| 9795 | "named_controls_create" ); |
| 9796 | server->dispatchgen = 0; |
| 9797 | ISC_LIST_INIT(server->dispatches); |
| 9798 | |
| 9799 | ISC_LIST_INIT(server->statschannels); |
| 9800 | |
| 9801 | ISC_LIST_INIT(server->cachelist); |
| 9802 | |
| 9803 | server->sessionkey = NULL; |
| 9804 | server->session_keyfile = NULL; |
| 9805 | server->session_keyname = NULL; |
| 9806 | server->session_keyalg = DST_ALG_UNKNOWN; |
| 9807 | server->session_keybits = 0; |
| 9808 | |
| 9809 | server->lockfile = NULL; |
| 9810 | |
| 9811 | server->dtenv = NULL; |
| 9812 | |
| 9813 | server->magic = NAMED_SERVER_MAGIC; |
| 9814 | *serverp = server; |
| 9815 | } |
| 9816 | |
| 9817 | void |
| 9818 | named_server_destroy(named_server_t **serverp) { |
| 9819 | named_server_t *server = *serverp; |
| 9820 | REQUIRE(NAMED_SERVER_VALID(server)); |
| 9821 | |
| 9822 | #ifdef HAVE_DNSTAP |
| 9823 | if (server->dtenv != NULL) |
| 9824 | dns_dt_detach(&server->dtenv); |
| 9825 | #endif /* HAVE_DNSTAP */ |
| 9826 | |
| 9827 | #ifdef USE_DNSRPS |
| 9828 | dns_dnsrps_server_destroy(); |
| 9829 | #endif |
| 9830 | |
| 9831 | named_controls_destroy(&server->controls); |
| 9832 | |
| 9833 | isc_stats_detach(&server->zonestats); |
| 9834 | isc_stats_detach(&server->sockstats); |
| 9835 | isc_stats_detach(&server->resolverstats); |
| 9836 | |
| 9837 | if (server->sctx != NULL) |
| 9838 | ns_server_detach(&server->sctx); |
| 9839 | |
| 9840 | isc_mem_free(server->mctx, server->statsfile); |
| 9841 | isc_mem_free(server->mctx, server->bindkeysfile); |
| 9842 | isc_mem_free(server->mctx, server->dumpfile); |
| 9843 | isc_mem_free(server->mctx, server->secrootsfile); |
| 9844 | isc_mem_free(server->mctx, server->recfile); |
| 9845 | |
| 9846 | if (server->version != NULL) |
| 9847 | isc_mem_free(server->mctx, server->version); |
| 9848 | if (server->hostname != NULL) |
| 9849 | isc_mem_free(server->mctx, server->hostname); |
| 9850 | if (server->lockfile != NULL) |
| 9851 | isc_mem_free(server->mctx, server->lockfile); |
| 9852 | |
| 9853 | if (server->zonemgr != NULL) |
| 9854 | dns_zonemgr_detach(&server->zonemgr); |
| 9855 | |
| 9856 | dst_lib_destroy(); |
| 9857 | |
| 9858 | isc_event_free(&server->reload_event); |
| 9859 | |
| 9860 | INSIST(ISC_LIST_EMPTY(server->viewlist)); |
| 9861 | INSIST(ISC_LIST_EMPTY(server->cachelist)); |
| 9862 | |
| 9863 | server->magic = 0; |
| 9864 | isc_mem_put(server->mctx, server, sizeof(*server)); |
| 9865 | *serverp = NULL; |
| 9866 | } |
| 9867 | |
| 9868 | static void |
| 9869 | fatal(const char *msg, isc_result_t result) { |
| 9870 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9871 | NAMED_LOGMODULE_SERVER, ISC_LOG_CRITICAL, |
| 9872 | "%s: %s" , msg, isc_result_totext(result)); |
| 9873 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9874 | NAMED_LOGMODULE_SERVER, ISC_LOG_CRITICAL, |
| 9875 | "exiting (due to fatal error)" ); |
| 9876 | named_os_shutdown(); |
| 9877 | exit(1); |
| 9878 | } |
| 9879 | |
| 9880 | static void |
| 9881 | start_reserved_dispatches(named_server_t *server) { |
| 9882 | |
| 9883 | REQUIRE(NAMED_SERVER_VALID(server)); |
| 9884 | |
| 9885 | server->dispatchgen++; |
| 9886 | } |
| 9887 | |
| 9888 | static void |
| 9889 | end_reserved_dispatches(named_server_t *server, bool all) { |
| 9890 | named_dispatch_t *dispatch, *nextdispatch; |
| 9891 | |
| 9892 | REQUIRE(NAMED_SERVER_VALID(server)); |
| 9893 | |
| 9894 | for (dispatch = ISC_LIST_HEAD(server->dispatches); |
| 9895 | dispatch != NULL; |
| 9896 | dispatch = nextdispatch) { |
| 9897 | nextdispatch = ISC_LIST_NEXT(dispatch, link); |
| 9898 | if (!all && server->dispatchgen == dispatch-> dispatchgen) |
| 9899 | continue; |
| 9900 | ISC_LIST_UNLINK(server->dispatches, dispatch, link); |
| 9901 | dns_dispatch_detach(&dispatch->dispatch); |
| 9902 | isc_mem_put(server->mctx, dispatch, sizeof(*dispatch)); |
| 9903 | } |
| 9904 | } |
| 9905 | |
| 9906 | void |
| 9907 | named_add_reserved_dispatch(named_server_t *server, |
| 9908 | const isc_sockaddr_t *addr) |
| 9909 | { |
| 9910 | named_dispatch_t *dispatch; |
| 9911 | in_port_t port; |
| 9912 | char addrbuf[ISC_SOCKADDR_FORMATSIZE]; |
| 9913 | isc_result_t result; |
| 9914 | unsigned int attrs, attrmask; |
| 9915 | |
| 9916 | REQUIRE(NAMED_SERVER_VALID(server)); |
| 9917 | |
| 9918 | port = isc_sockaddr_getport(addr); |
| 9919 | if (port == 0 || port >= 1024) |
| 9920 | return; |
| 9921 | |
| 9922 | for (dispatch = ISC_LIST_HEAD(server->dispatches); |
| 9923 | dispatch != NULL; |
| 9924 | dispatch = ISC_LIST_NEXT(dispatch, link)) { |
| 9925 | if (isc_sockaddr_equal(&dispatch->addr, addr)) |
| 9926 | break; |
| 9927 | } |
| 9928 | if (dispatch != NULL) { |
| 9929 | dispatch->dispatchgen = server->dispatchgen; |
| 9930 | return; |
| 9931 | } |
| 9932 | |
| 9933 | dispatch = isc_mem_get(server->mctx, sizeof(*dispatch)); |
| 9934 | if (dispatch == NULL) { |
| 9935 | result = ISC_R_NOMEMORY; |
| 9936 | goto cleanup; |
| 9937 | } |
| 9938 | |
| 9939 | dispatch->addr = *addr; |
| 9940 | dispatch->dispatchgen = server->dispatchgen; |
| 9941 | dispatch->dispatch = NULL; |
| 9942 | |
| 9943 | attrs = 0; |
| 9944 | attrs |= DNS_DISPATCHATTR_UDP; |
| 9945 | switch (isc_sockaddr_pf(addr)) { |
| 9946 | case AF_INET: |
| 9947 | attrs |= DNS_DISPATCHATTR_IPV4; |
| 9948 | break; |
| 9949 | case AF_INET6: |
| 9950 | attrs |= DNS_DISPATCHATTR_IPV6; |
| 9951 | break; |
| 9952 | default: |
| 9953 | result = ISC_R_NOTIMPLEMENTED; |
| 9954 | goto cleanup; |
| 9955 | } |
| 9956 | attrmask = 0; |
| 9957 | attrmask |= DNS_DISPATCHATTR_UDP; |
| 9958 | attrmask |= DNS_DISPATCHATTR_TCP; |
| 9959 | attrmask |= DNS_DISPATCHATTR_IPV4; |
| 9960 | attrmask |= DNS_DISPATCHATTR_IPV6; |
| 9961 | |
| 9962 | result = dns_dispatch_getudp(named_g_dispatchmgr, named_g_socketmgr, |
| 9963 | named_g_taskmgr, &dispatch->addr, 4096, |
| 9964 | UDPBUFFERS, 32768, 16411, 16433, |
| 9965 | attrs, attrmask, &dispatch->dispatch); |
| 9966 | if (result != ISC_R_SUCCESS) |
| 9967 | goto cleanup; |
| 9968 | |
| 9969 | ISC_LIST_INITANDPREPEND(server->dispatches, dispatch, link); |
| 9970 | |
| 9971 | return; |
| 9972 | |
| 9973 | cleanup: |
| 9974 | if (dispatch != NULL) |
| 9975 | isc_mem_put(server->mctx, dispatch, sizeof(*dispatch)); |
| 9976 | isc_sockaddr_format(addr, addrbuf, sizeof(addrbuf)); |
| 9977 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9978 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 9979 | "unable to create dispatch for reserved port %s: %s" , |
| 9980 | addrbuf, isc_result_totext(result)); |
| 9981 | } |
| 9982 | |
| 9983 | |
| 9984 | static isc_result_t |
| 9985 | loadconfig(named_server_t *server) { |
| 9986 | isc_result_t result; |
| 9987 | start_reserved_dispatches(server); |
| 9988 | result = load_configuration(named_g_conffile, server, false); |
| 9989 | if (result == ISC_R_SUCCESS) { |
| 9990 | end_reserved_dispatches(server, false); |
| 9991 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9992 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 9993 | "reloading configuration succeeded" ); |
| 9994 | } else { |
| 9995 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 9996 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 9997 | "reloading configuration failed: %s" , |
| 9998 | isc_result_totext(result)); |
| 9999 | } |
| 10000 | |
| 10001 | return (result); |
| 10002 | } |
| 10003 | |
| 10004 | static isc_result_t |
| 10005 | reload(named_server_t *server) { |
| 10006 | isc_result_t result; |
| 10007 | server->reload_in_progress = true; |
| 10008 | CHECK(loadconfig(server)); |
| 10009 | |
| 10010 | result = load_zones(server, false, false); |
| 10011 | if (result == ISC_R_SUCCESS) |
| 10012 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10013 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10014 | "reloading zones succeeded" ); |
| 10015 | else |
| 10016 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10017 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 10018 | "reloading zones failed: %s" , |
| 10019 | isc_result_totext(result)); |
| 10020 | |
| 10021 | cleanup: |
| 10022 | return (result); |
| 10023 | } |
| 10024 | |
| 10025 | /* |
| 10026 | * Handle a reload event (from SIGHUP). |
| 10027 | */ |
| 10028 | static void |
| 10029 | named_server_reload(isc_task_t *task, isc_event_t *event) { |
| 10030 | named_server_t *server = (named_server_t *)event->ev_arg; |
| 10031 | |
| 10032 | INSIST(task == server->task); |
| 10033 | UNUSED(task); |
| 10034 | |
| 10035 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10036 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10037 | "received SIGHUP signal to reload zones" ); |
| 10038 | (void)reload(server); |
| 10039 | |
| 10040 | LOCK(&server->reload_event_lock); |
| 10041 | INSIST(server->reload_event == NULL); |
| 10042 | server->reload_event = event; |
| 10043 | UNLOCK(&server->reload_event_lock); |
| 10044 | } |
| 10045 | |
| 10046 | void |
| 10047 | named_server_reloadwanted(named_server_t *server) { |
| 10048 | LOCK(&server->reload_event_lock); |
| 10049 | if (server->reload_event != NULL) |
| 10050 | isc_task_send(server->task, &server->reload_event); |
| 10051 | UNLOCK(&server->reload_event_lock); |
| 10052 | } |
| 10053 | |
| 10054 | void |
| 10055 | named_server_scan_interfaces(named_server_t *server) { |
| 10056 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10057 | NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1), |
| 10058 | "automatic interface rescan" ); |
| 10059 | |
| 10060 | ns_interfacemgr_scan(server->interfacemgr, true); |
| 10061 | } |
| 10062 | |
| 10063 | /* |
| 10064 | * Get the next token from lexer 'lex'. |
| 10065 | * |
| 10066 | * NOTE: the token value for string tokens always uses the same pointer |
| 10067 | * value. Multiple calls to this function on the same lexer will always |
| 10068 | * return either that value (lex->data) or NULL. It is necessary to copy |
| 10069 | * the token into local storage if it needs to be referenced after the next |
| 10070 | * call to next_token(). |
| 10071 | */ |
| 10072 | static char * |
| 10073 | next_token(isc_lex_t *lex, isc_buffer_t **text) { |
| 10074 | isc_result_t result; |
| 10075 | isc_token_t token; |
| 10076 | |
| 10077 | token.type = isc_tokentype_unknown; |
| 10078 | result = isc_lex_gettoken(lex, ISC_LEXOPT_EOF|ISC_LEXOPT_QSTRING, |
| 10079 | &token); |
| 10080 | |
| 10081 | switch (result) { |
| 10082 | case ISC_R_NOMORE: |
| 10083 | (void) isc_lex_close(lex); |
| 10084 | break; |
| 10085 | case ISC_R_SUCCESS: |
| 10086 | if (token.type == isc_tokentype_eof) |
| 10087 | (void) isc_lex_close(lex); |
| 10088 | break; |
| 10089 | case ISC_R_NOSPACE: |
| 10090 | if (text != NULL) { |
| 10091 | (void) putstr(text, "token too large" ); |
| 10092 | (void) putnull(text); |
| 10093 | } |
| 10094 | return (NULL); |
| 10095 | default: |
| 10096 | if (text != NULL) { |
| 10097 | (void) putstr(text, isc_result_totext(result)); |
| 10098 | (void) putnull(text); |
| 10099 | } |
| 10100 | return (NULL); |
| 10101 | } |
| 10102 | |
| 10103 | if (token.type == isc_tokentype_string || |
| 10104 | token.type == isc_tokentype_qstring) |
| 10105 | return (token.value.as_textregion.base); |
| 10106 | |
| 10107 | return (NULL); |
| 10108 | } |
| 10109 | |
| 10110 | /* |
| 10111 | * Find the zone specified in the control channel command, if any. |
| 10112 | * If a zone is specified, point '*zonep' at it, otherwise |
| 10113 | * set '*zonep' to NULL, and f 'zonename' is not NULL, copy |
| 10114 | * the zone name into it (N.B. 'zonename' must have space to hold |
| 10115 | * a full DNS name). |
| 10116 | * |
| 10117 | * If 'zonetxt' is set, the caller has already pulled a token |
| 10118 | * off the command line that is to be used as the zone name. (This |
| 10119 | * is sometimes done when it's necessary to check for an optional |
| 10120 | * argument before the zone name, as in "rndc sync [-clean] zone".) |
| 10121 | */ |
| 10122 | static isc_result_t |
| 10123 | zone_from_args(named_server_t *server, isc_lex_t *lex, const char *zonetxt, |
| 10124 | dns_zone_t **zonep, char *zonename, |
| 10125 | isc_buffer_t **text, bool skip) |
| 10126 | { |
| 10127 | char *ptr; |
| 10128 | char *classtxt; |
| 10129 | const char *viewtxt = NULL; |
| 10130 | dns_fixedname_t fname; |
| 10131 | dns_name_t *name; |
| 10132 | isc_result_t result; |
| 10133 | dns_view_t *view = NULL; |
| 10134 | dns_rdataclass_t rdclass; |
| 10135 | char problem[DNS_NAME_FORMATSIZE + 500] = "" ; |
| 10136 | char zonebuf[DNS_NAME_FORMATSIZE]; |
| 10137 | bool redirect = false; |
| 10138 | |
| 10139 | REQUIRE(zonep != NULL && *zonep == NULL); |
| 10140 | |
| 10141 | if (skip) { |
| 10142 | /* Skip the command name. */ |
| 10143 | ptr = next_token(lex, text); |
| 10144 | if (ptr == NULL) |
| 10145 | return (ISC_R_UNEXPECTEDEND); |
| 10146 | } |
| 10147 | |
| 10148 | /* Look for the zone name. */ |
| 10149 | if (zonetxt == NULL) |
| 10150 | zonetxt = next_token(lex, text); |
| 10151 | if (zonetxt == NULL) |
| 10152 | return (ISC_R_SUCCESS); |
| 10153 | |
| 10154 | /* Copy zonetxt because it'll be overwritten by next_token() */ |
| 10155 | /* To locate a zone named "-redirect" use "-redirect." */ |
| 10156 | if (strcmp(zonetxt, "-redirect" ) == 0) { |
| 10157 | redirect = true; |
| 10158 | strlcpy(zonebuf, "." , DNS_NAME_FORMATSIZE); |
| 10159 | } else |
| 10160 | strlcpy(zonebuf, zonetxt, DNS_NAME_FORMATSIZE); |
| 10161 | if (zonename != NULL) |
| 10162 | strlcpy(zonename, redirect ? "." : zonetxt, |
| 10163 | DNS_NAME_FORMATSIZE); |
| 10164 | |
| 10165 | name = dns_fixedname_initname(&fname); |
| 10166 | CHECK(dns_name_fromstring(name, zonebuf, 0, NULL)); |
| 10167 | |
| 10168 | /* Look for the optional class name. */ |
| 10169 | classtxt = next_token(lex, text); |
| 10170 | if (classtxt != NULL) { |
| 10171 | isc_textregion_t r; |
| 10172 | r.base = classtxt; |
| 10173 | r.length = strlen(classtxt); |
| 10174 | CHECK(dns_rdataclass_fromtext(&rdclass, &r)); |
| 10175 | |
| 10176 | /* Look for the optional view name. */ |
| 10177 | viewtxt = next_token(lex, text); |
| 10178 | } else |
| 10179 | rdclass = dns_rdataclass_in; |
| 10180 | |
| 10181 | if (viewtxt == NULL) { |
| 10182 | if (redirect) { |
| 10183 | result = dns_viewlist_find(&server->viewlist, |
| 10184 | "_default" , |
| 10185 | dns_rdataclass_in, |
| 10186 | &view); |
| 10187 | if (result != ISC_R_SUCCESS || |
| 10188 | view->redirect == NULL) |
| 10189 | { |
| 10190 | result = ISC_R_NOTFOUND; |
| 10191 | snprintf(problem, sizeof(problem), |
| 10192 | "redirect zone not found in " |
| 10193 | "_default view" ); |
| 10194 | } else { |
| 10195 | dns_zone_attach(view->redirect, zonep); |
| 10196 | result = ISC_R_SUCCESS; |
| 10197 | } |
| 10198 | } else { |
| 10199 | result = dns_viewlist_findzone(&server->viewlist, |
| 10200 | name, (classtxt == NULL), |
| 10201 | rdclass, zonep); |
| 10202 | if (result == ISC_R_NOTFOUND) |
| 10203 | snprintf(problem, sizeof(problem), |
| 10204 | "no matching zone '%s' in any view" , |
| 10205 | zonebuf); |
| 10206 | else if (result == ISC_R_MULTIPLE) |
| 10207 | snprintf(problem, sizeof(problem), |
| 10208 | "zone '%s' was found in multiple " |
| 10209 | "views" , zonebuf); |
| 10210 | } |
| 10211 | } else { |
| 10212 | result = dns_viewlist_find(&server->viewlist, viewtxt, |
| 10213 | rdclass, &view); |
| 10214 | if (result != ISC_R_SUCCESS) { |
| 10215 | snprintf(problem, sizeof(problem), |
| 10216 | "no matching view '%s'" , viewtxt); |
| 10217 | goto report; |
| 10218 | } |
| 10219 | |
| 10220 | if (redirect) { |
| 10221 | if (view->redirect != NULL) { |
| 10222 | dns_zone_attach(view->redirect, zonep); |
| 10223 | result = ISC_R_SUCCESS; |
| 10224 | } else |
| 10225 | result = ISC_R_NOTFOUND; |
| 10226 | } else |
| 10227 | result = dns_zt_find(view->zonetable, name, 0, |
| 10228 | NULL, zonep); |
| 10229 | if (result != ISC_R_SUCCESS) |
| 10230 | snprintf(problem, sizeof(problem), |
| 10231 | "no matching zone '%s' in view '%s'" , |
| 10232 | zonebuf, viewtxt); |
| 10233 | } |
| 10234 | |
| 10235 | /* Partial match? */ |
| 10236 | if (result != ISC_R_SUCCESS && *zonep != NULL) |
| 10237 | dns_zone_detach(zonep); |
| 10238 | if (result == DNS_R_PARTIALMATCH) |
| 10239 | result = ISC_R_NOTFOUND; |
| 10240 | report: |
| 10241 | if (result != ISC_R_SUCCESS) { |
| 10242 | isc_result_t tresult; |
| 10243 | |
| 10244 | tresult = putstr(text, problem); |
| 10245 | if (tresult == ISC_R_SUCCESS) |
| 10246 | (void) putnull(text); |
| 10247 | } |
| 10248 | |
| 10249 | cleanup: |
| 10250 | if (view != NULL) |
| 10251 | dns_view_detach(&view); |
| 10252 | |
| 10253 | return (result); |
| 10254 | } |
| 10255 | |
| 10256 | /* |
| 10257 | * Act on a "retransfer" command from the command channel. |
| 10258 | */ |
| 10259 | isc_result_t |
| 10260 | named_server_retransfercommand(named_server_t *server, isc_lex_t *lex, |
| 10261 | isc_buffer_t **text) |
| 10262 | { |
| 10263 | isc_result_t result; |
| 10264 | dns_zone_t *zone = NULL; |
| 10265 | dns_zone_t *raw = NULL; |
| 10266 | dns_zonetype_t type; |
| 10267 | |
| 10268 | result = zone_from_args(server, lex, NULL, &zone, NULL, |
| 10269 | text, true); |
| 10270 | if (result != ISC_R_SUCCESS) |
| 10271 | return (result); |
| 10272 | if (zone == NULL) |
| 10273 | return (ISC_R_UNEXPECTEDEND); |
| 10274 | dns_zone_getraw(zone, &raw); |
| 10275 | if (raw != NULL) { |
| 10276 | dns_zone_detach(&zone); |
| 10277 | dns_zone_attach(raw, &zone); |
| 10278 | dns_zone_detach(&raw); |
| 10279 | } |
| 10280 | type = dns_zone_gettype(zone); |
| 10281 | if (type == dns_zone_slave || type == dns_zone_mirror || |
| 10282 | type == dns_zone_stub || |
| 10283 | (type == dns_zone_redirect && |
| 10284 | dns_zone_getredirecttype(zone) == dns_zone_slave)) |
| 10285 | dns_zone_forcereload(zone); |
| 10286 | else |
| 10287 | result = ISC_R_NOTFOUND; |
| 10288 | dns_zone_detach(&zone); |
| 10289 | return (result); |
| 10290 | } |
| 10291 | |
| 10292 | /* |
| 10293 | * Act on a "reload" command from the command channel. |
| 10294 | */ |
| 10295 | isc_result_t |
| 10296 | named_server_reloadcommand(named_server_t *server, isc_lex_t *lex, |
| 10297 | isc_buffer_t **text) |
| 10298 | { |
| 10299 | isc_result_t result; |
| 10300 | dns_zone_t *zone = NULL; |
| 10301 | dns_zonetype_t type; |
| 10302 | const char *msg = NULL; |
| 10303 | |
| 10304 | result = zone_from_args(server, lex, NULL, &zone, NULL, |
| 10305 | text, true); |
| 10306 | if (result != ISC_R_SUCCESS) |
| 10307 | return (result); |
| 10308 | if (zone == NULL) { |
| 10309 | result = reload(server); |
| 10310 | if (result == ISC_R_SUCCESS) |
| 10311 | msg = "server reload successful" ; |
| 10312 | } else { |
| 10313 | type = dns_zone_gettype(zone); |
| 10314 | if (type == dns_zone_slave || type == dns_zone_mirror || |
| 10315 | type == dns_zone_stub) |
| 10316 | { |
| 10317 | dns_zone_refresh(zone); |
| 10318 | dns_zone_detach(&zone); |
| 10319 | msg = "zone refresh queued" ; |
| 10320 | } else { |
| 10321 | result = dns_zone_load(zone, false); |
| 10322 | dns_zone_detach(&zone); |
| 10323 | switch (result) { |
| 10324 | case ISC_R_SUCCESS: |
| 10325 | msg = "zone reload successful" ; |
| 10326 | break; |
| 10327 | case DNS_R_CONTINUE: |
| 10328 | msg = "zone reload queued" ; |
| 10329 | result = ISC_R_SUCCESS; |
| 10330 | break; |
| 10331 | case DNS_R_UPTODATE: |
| 10332 | msg = "zone reload up-to-date" ; |
| 10333 | result = ISC_R_SUCCESS; |
| 10334 | break; |
| 10335 | default: |
| 10336 | /* failure message will be generated by rndc */ |
| 10337 | break; |
| 10338 | } |
| 10339 | } |
| 10340 | } |
| 10341 | if (msg != NULL) { |
| 10342 | (void) putstr(text, msg); |
| 10343 | (void) putnull(text); |
| 10344 | } |
| 10345 | return (result); |
| 10346 | } |
| 10347 | |
| 10348 | /* |
| 10349 | * Act on a "reconfig" command from the command channel. |
| 10350 | */ |
| 10351 | isc_result_t |
| 10352 | named_server_reconfigcommand(named_server_t *server) { |
| 10353 | isc_result_t result; |
| 10354 | server->reload_in_progress = true; |
| 10355 | |
| 10356 | CHECK(loadconfig(server)); |
| 10357 | |
| 10358 | result = load_zones(server, false, true); |
| 10359 | if (result == ISC_R_SUCCESS) |
| 10360 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10361 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10362 | "scheduled loading new zones" ); |
| 10363 | else |
| 10364 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10365 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 10366 | "loading new zones failed: %s" , |
| 10367 | isc_result_totext(result)); |
| 10368 | cleanup: |
| 10369 | return (result); |
| 10370 | } |
| 10371 | |
| 10372 | /* |
| 10373 | * Act on a "notify" command from the command channel. |
| 10374 | */ |
| 10375 | isc_result_t |
| 10376 | named_server_notifycommand(named_server_t *server, isc_lex_t *lex, |
| 10377 | isc_buffer_t **text) |
| 10378 | { |
| 10379 | isc_result_t result; |
| 10380 | dns_zone_t *zone = NULL; |
| 10381 | const char msg[] = "zone notify queued" ; |
| 10382 | |
| 10383 | result = zone_from_args(server, lex, NULL, &zone, NULL, |
| 10384 | text, true); |
| 10385 | if (result != ISC_R_SUCCESS) |
| 10386 | return (result); |
| 10387 | if (zone == NULL) |
| 10388 | return (ISC_R_UNEXPECTEDEND); |
| 10389 | |
| 10390 | dns_zone_notify(zone); |
| 10391 | dns_zone_detach(&zone); |
| 10392 | (void) putstr(text, msg); |
| 10393 | (void) putnull(text); |
| 10394 | |
| 10395 | return (ISC_R_SUCCESS); |
| 10396 | } |
| 10397 | |
| 10398 | /* |
| 10399 | * Act on a "refresh" command from the command channel. |
| 10400 | */ |
| 10401 | isc_result_t |
| 10402 | named_server_refreshcommand(named_server_t *server, isc_lex_t *lex, |
| 10403 | isc_buffer_t **text) |
| 10404 | { |
| 10405 | isc_result_t result; |
| 10406 | dns_zone_t *zone = NULL, *raw = NULL; |
| 10407 | const char msg1[] = "zone refresh queued" ; |
| 10408 | const char msg2[] = "not a slave, mirror, or stub zone" ; |
| 10409 | dns_zonetype_t type; |
| 10410 | |
| 10411 | result = zone_from_args(server, lex, NULL, &zone, NULL, |
| 10412 | text, true); |
| 10413 | if (result != ISC_R_SUCCESS) |
| 10414 | return (result); |
| 10415 | if (zone == NULL) |
| 10416 | return (ISC_R_UNEXPECTEDEND); |
| 10417 | |
| 10418 | dns_zone_getraw(zone, &raw); |
| 10419 | if (raw != NULL) { |
| 10420 | dns_zone_detach(&zone); |
| 10421 | dns_zone_attach(raw, &zone); |
| 10422 | dns_zone_detach(&raw); |
| 10423 | } |
| 10424 | |
| 10425 | type = dns_zone_gettype(zone); |
| 10426 | if (type == dns_zone_slave || type == dns_zone_mirror || |
| 10427 | type == dns_zone_stub) |
| 10428 | { |
| 10429 | dns_zone_refresh(zone); |
| 10430 | dns_zone_detach(&zone); |
| 10431 | (void) putstr(text, msg1); |
| 10432 | (void) putnull(text); |
| 10433 | return (ISC_R_SUCCESS); |
| 10434 | } |
| 10435 | |
| 10436 | dns_zone_detach(&zone); |
| 10437 | (void) putstr(text, msg2); |
| 10438 | (void) putnull(text); |
| 10439 | return (ISC_R_FAILURE); |
| 10440 | } |
| 10441 | |
| 10442 | isc_result_t |
| 10443 | named_server_togglequerylog(named_server_t *server, isc_lex_t *lex) { |
| 10444 | bool prev, value; |
| 10445 | char *ptr; |
| 10446 | |
| 10447 | /* Skip the command name. */ |
| 10448 | ptr = next_token(lex, NULL); |
| 10449 | if (ptr == NULL) |
| 10450 | return (ISC_R_UNEXPECTEDEND); |
| 10451 | |
| 10452 | prev = ns_server_getoption(server->sctx, NS_SERVER_LOGQUERIES); |
| 10453 | |
| 10454 | ptr = next_token(lex, NULL); |
| 10455 | if (ptr == NULL) { |
| 10456 | value = !prev; |
| 10457 | } else if (!strcasecmp(ptr, "on" ) || !strcasecmp(ptr, "yes" ) || |
| 10458 | !strcasecmp(ptr, "enable" ) || !strcasecmp(ptr, "true" )) { |
| 10459 | value = true; |
| 10460 | } else if (!strcasecmp(ptr, "off" ) || !strcasecmp(ptr, "no" ) || |
| 10461 | !strcasecmp(ptr, "disable" ) || !strcasecmp(ptr, "false" )) { |
| 10462 | value = false; |
| 10463 | } else { |
| 10464 | return (DNS_R_SYNTAX); |
| 10465 | } |
| 10466 | |
| 10467 | if (value == prev) |
| 10468 | return (ISC_R_SUCCESS); |
| 10469 | |
| 10470 | ns_server_setoption(server->sctx, NS_SERVER_LOGQUERIES, value); |
| 10471 | |
| 10472 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10473 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10474 | "query logging is now %s" , value ? "on" : "off" ); |
| 10475 | return (ISC_R_SUCCESS); |
| 10476 | } |
| 10477 | |
| 10478 | static isc_result_t |
| 10479 | ns_listenlist_fromconfig(const cfg_obj_t *listenlist, const cfg_obj_t *config, |
| 10480 | cfg_aclconfctx_t *actx, isc_mem_t *mctx, |
| 10481 | uint16_t family, ns_listenlist_t **target) |
| 10482 | { |
| 10483 | isc_result_t result; |
| 10484 | const cfg_listelt_t *element; |
| 10485 | ns_listenlist_t *dlist = NULL; |
| 10486 | |
| 10487 | REQUIRE(target != NULL && *target == NULL); |
| 10488 | |
| 10489 | result = ns_listenlist_create(mctx, &dlist); |
| 10490 | if (result != ISC_R_SUCCESS) |
| 10491 | return (result); |
| 10492 | |
| 10493 | for (element = cfg_list_first(listenlist); |
| 10494 | element != NULL; |
| 10495 | element = cfg_list_next(element)) |
| 10496 | { |
| 10497 | ns_listenelt_t *delt = NULL; |
| 10498 | const cfg_obj_t *listener = cfg_listelt_value(element); |
| 10499 | result = ns_listenelt_fromconfig(listener, config, actx, |
| 10500 | mctx, family, &delt); |
| 10501 | if (result != ISC_R_SUCCESS) |
| 10502 | goto cleanup; |
| 10503 | ISC_LIST_APPEND(dlist->elts, delt, link); |
| 10504 | } |
| 10505 | *target = dlist; |
| 10506 | return (ISC_R_SUCCESS); |
| 10507 | |
| 10508 | cleanup: |
| 10509 | ns_listenlist_detach(&dlist); |
| 10510 | return (result); |
| 10511 | } |
| 10512 | |
| 10513 | /* |
| 10514 | * Create a listen list from the corresponding configuration |
| 10515 | * data structure. |
| 10516 | */ |
| 10517 | static isc_result_t |
| 10518 | ns_listenelt_fromconfig(const cfg_obj_t *listener, const cfg_obj_t *config, |
| 10519 | cfg_aclconfctx_t *actx, isc_mem_t *mctx, |
| 10520 | uint16_t family, ns_listenelt_t **target) |
| 10521 | { |
| 10522 | isc_result_t result; |
| 10523 | const cfg_obj_t *portobj, *dscpobj; |
| 10524 | in_port_t port; |
| 10525 | isc_dscp_t dscp = -1; |
| 10526 | ns_listenelt_t *delt = NULL; |
| 10527 | REQUIRE(target != NULL && *target == NULL); |
| 10528 | |
| 10529 | portobj = cfg_tuple_get(listener, "port" ); |
| 10530 | if (!cfg_obj_isuint32(portobj)) { |
| 10531 | if (named_g_port != 0) { |
| 10532 | port = named_g_port; |
| 10533 | } else { |
| 10534 | result = named_config_getport(config, &port); |
| 10535 | if (result != ISC_R_SUCCESS) |
| 10536 | return (result); |
| 10537 | } |
| 10538 | } else { |
| 10539 | if (cfg_obj_asuint32(portobj) >= UINT16_MAX) { |
| 10540 | cfg_obj_log(portobj, named_g_lctx, ISC_LOG_ERROR, |
| 10541 | "port value '%u' is out of range" , |
| 10542 | cfg_obj_asuint32(portobj)); |
| 10543 | return (ISC_R_RANGE); |
| 10544 | } |
| 10545 | port = (in_port_t)cfg_obj_asuint32(portobj); |
| 10546 | } |
| 10547 | |
| 10548 | dscpobj = cfg_tuple_get(listener, "dscp" ); |
| 10549 | if (!cfg_obj_isuint32(dscpobj)) |
| 10550 | dscp = named_g_dscp; |
| 10551 | else { |
| 10552 | if (cfg_obj_asuint32(dscpobj) > 63) { |
| 10553 | cfg_obj_log(dscpobj, named_g_lctx, ISC_LOG_ERROR, |
| 10554 | "dscp value '%u' is out of range" , |
| 10555 | cfg_obj_asuint32(dscpobj)); |
| 10556 | return (ISC_R_RANGE); |
| 10557 | } |
| 10558 | dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj); |
| 10559 | } |
| 10560 | |
| 10561 | result = ns_listenelt_create(mctx, port, dscp, NULL, &delt); |
| 10562 | if (result != ISC_R_SUCCESS) |
| 10563 | return (result); |
| 10564 | |
| 10565 | result = cfg_acl_fromconfig2(cfg_tuple_get(listener, "acl" ), |
| 10566 | config, named_g_lctx, actx, mctx, 0, |
| 10567 | family, &delt->acl); |
| 10568 | if (result != ISC_R_SUCCESS) { |
| 10569 | ns_listenelt_destroy(delt); |
| 10570 | return (result); |
| 10571 | } |
| 10572 | *target = delt; |
| 10573 | return (ISC_R_SUCCESS); |
| 10574 | } |
| 10575 | |
| 10576 | isc_result_t |
| 10577 | named_server_dumpstats(named_server_t *server) { |
| 10578 | isc_result_t result; |
| 10579 | FILE *fp = NULL; |
| 10580 | |
| 10581 | CHECKMF(isc_stdio_open(server->statsfile, "a" , &fp), |
| 10582 | "could not open statistics dump file" , server->statsfile); |
| 10583 | |
| 10584 | result = named_stats_dump(server, fp); |
| 10585 | |
| 10586 | cleanup: |
| 10587 | if (fp != NULL) |
| 10588 | (void)isc_stdio_close(fp); |
| 10589 | if (result == ISC_R_SUCCESS) |
| 10590 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10591 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10592 | "dumpstats complete" ); |
| 10593 | else |
| 10594 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10595 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 10596 | "dumpstats failed: %s" , |
| 10597 | dns_result_totext(result)); |
| 10598 | return (result); |
| 10599 | } |
| 10600 | |
| 10601 | static isc_result_t |
| 10602 | add_zone_tolist(dns_zone_t *zone, void *uap) { |
| 10603 | struct dumpcontext *dctx = uap; |
| 10604 | struct zonelistentry *zle; |
| 10605 | |
| 10606 | zle = isc_mem_get(dctx->mctx, sizeof *zle); |
| 10607 | if (zle == NULL) |
| 10608 | return (ISC_R_NOMEMORY); |
| 10609 | zle->zone = NULL; |
| 10610 | dns_zone_attach(zone, &zle->zone); |
| 10611 | ISC_LINK_INIT(zle, link); |
| 10612 | ISC_LIST_APPEND(ISC_LIST_TAIL(dctx->viewlist)->zonelist, zle, link); |
| 10613 | return (ISC_R_SUCCESS); |
| 10614 | } |
| 10615 | |
| 10616 | static isc_result_t |
| 10617 | add_view_tolist(struct dumpcontext *dctx, dns_view_t *view) { |
| 10618 | struct viewlistentry *vle; |
| 10619 | isc_result_t result = ISC_R_SUCCESS; |
| 10620 | |
| 10621 | /* |
| 10622 | * Prevent duplicate views. |
| 10623 | */ |
| 10624 | for (vle = ISC_LIST_HEAD(dctx->viewlist); |
| 10625 | vle != NULL; |
| 10626 | vle = ISC_LIST_NEXT(vle, link)) |
| 10627 | if (vle->view == view) |
| 10628 | return (ISC_R_SUCCESS); |
| 10629 | |
| 10630 | vle = isc_mem_get(dctx->mctx, sizeof *vle); |
| 10631 | if (vle == NULL) |
| 10632 | return (ISC_R_NOMEMORY); |
| 10633 | vle->view = NULL; |
| 10634 | dns_view_attach(view, &vle->view); |
| 10635 | ISC_LINK_INIT(vle, link); |
| 10636 | ISC_LIST_INIT(vle->zonelist); |
| 10637 | ISC_LIST_APPEND(dctx->viewlist, vle, link); |
| 10638 | if (dctx->dumpzones) |
| 10639 | result = dns_zt_apply(view->zonetable, true, NULL, |
| 10640 | add_zone_tolist, dctx); |
| 10641 | return (result); |
| 10642 | } |
| 10643 | |
| 10644 | static void |
| 10645 | dumpcontext_destroy(struct dumpcontext *dctx) { |
| 10646 | struct viewlistentry *vle; |
| 10647 | struct zonelistentry *zle; |
| 10648 | |
| 10649 | vle = ISC_LIST_HEAD(dctx->viewlist); |
| 10650 | while (vle != NULL) { |
| 10651 | ISC_LIST_UNLINK(dctx->viewlist, vle, link); |
| 10652 | zle = ISC_LIST_HEAD(vle->zonelist); |
| 10653 | while (zle != NULL) { |
| 10654 | ISC_LIST_UNLINK(vle->zonelist, zle, link); |
| 10655 | dns_zone_detach(&zle->zone); |
| 10656 | isc_mem_put(dctx->mctx, zle, sizeof *zle); |
| 10657 | zle = ISC_LIST_HEAD(vle->zonelist); |
| 10658 | } |
| 10659 | dns_view_detach(&vle->view); |
| 10660 | isc_mem_put(dctx->mctx, vle, sizeof *vle); |
| 10661 | vle = ISC_LIST_HEAD(dctx->viewlist); |
| 10662 | } |
| 10663 | if (dctx->version != NULL) |
| 10664 | dns_db_closeversion(dctx->db, &dctx->version, false); |
| 10665 | if (dctx->db != NULL) |
| 10666 | dns_db_detach(&dctx->db); |
| 10667 | if (dctx->cache != NULL) |
| 10668 | dns_db_detach(&dctx->cache); |
| 10669 | if (dctx->task != NULL) |
| 10670 | isc_task_detach(&dctx->task); |
| 10671 | if (dctx->fp != NULL) |
| 10672 | (void)isc_stdio_close(dctx->fp); |
| 10673 | if (dctx->mdctx != NULL) |
| 10674 | dns_dumpctx_detach(&dctx->mdctx); |
| 10675 | isc_mem_put(dctx->mctx, dctx, sizeof *dctx); |
| 10676 | } |
| 10677 | |
| 10678 | static void |
| 10679 | dumpdone(void *arg, isc_result_t result) { |
| 10680 | struct dumpcontext *dctx = arg; |
| 10681 | char buf[1024+32]; |
| 10682 | const dns_master_style_t *style; |
| 10683 | |
| 10684 | if (result != ISC_R_SUCCESS) |
| 10685 | goto cleanup; |
| 10686 | if (dctx->mdctx != NULL) |
| 10687 | dns_dumpctx_detach(&dctx->mdctx); |
| 10688 | if (dctx->view == NULL) { |
| 10689 | dctx->view = ISC_LIST_HEAD(dctx->viewlist); |
| 10690 | if (dctx->view == NULL) |
| 10691 | goto done; |
| 10692 | INSIST(dctx->zone == NULL); |
| 10693 | } else |
| 10694 | goto resume; |
| 10695 | nextview: |
| 10696 | fprintf(dctx->fp, ";\n; Start view %s\n;\n" , dctx->view->view->name); |
| 10697 | resume: |
| 10698 | if (dctx->dumpcache && dns_view_iscacheshared(dctx->view->view)) { |
| 10699 | fprintf(dctx->fp, |
| 10700 | ";\n; Cache of view '%s' is shared as '%s'\n" , |
| 10701 | dctx->view->view->name, |
| 10702 | dns_cache_getname(dctx->view->view->cache)); |
| 10703 | } else if (dctx->zone == NULL && dctx->cache == NULL && |
| 10704 | dctx->dumpcache) |
| 10705 | { |
| 10706 | style = &dns_master_style_cache; |
| 10707 | /* start cache dump */ |
| 10708 | if (dctx->view->view->cachedb != NULL) |
| 10709 | dns_db_attach(dctx->view->view->cachedb, &dctx->cache); |
| 10710 | if (dctx->cache != NULL) { |
| 10711 | fprintf(dctx->fp, |
| 10712 | ";\n; Cache dump of view '%s' (cache %s)\n;\n" , |
| 10713 | dctx->view->view->name, |
| 10714 | dns_cache_getname(dctx->view->view->cache)); |
| 10715 | result = dns_master_dumptostreaminc(dctx->mctx, |
| 10716 | dctx->cache, NULL, |
| 10717 | style, dctx->fp, |
| 10718 | dctx->task, |
| 10719 | dumpdone, dctx, |
| 10720 | &dctx->mdctx); |
| 10721 | if (result == DNS_R_CONTINUE) |
| 10722 | return; |
| 10723 | if (result == ISC_R_NOTIMPLEMENTED) |
| 10724 | fprintf(dctx->fp, "; %s\n" , |
| 10725 | dns_result_totext(result)); |
| 10726 | else if (result != ISC_R_SUCCESS) |
| 10727 | goto cleanup; |
| 10728 | } |
| 10729 | } |
| 10730 | |
| 10731 | if ((dctx->dumpadb || dctx->dumpbad || dctx->dumpfail) && |
| 10732 | dctx->cache == NULL && dctx->view->view->cachedb != NULL) |
| 10733 | dns_db_attach(dctx->view->view->cachedb, &dctx->cache); |
| 10734 | |
| 10735 | if (dctx->cache != NULL) { |
| 10736 | if (dctx->dumpadb) |
| 10737 | dns_adb_dump(dctx->view->view->adb, dctx->fp); |
| 10738 | if (dctx->dumpbad) |
| 10739 | dns_resolver_printbadcache(dctx->view->view->resolver, |
| 10740 | dctx->fp); |
| 10741 | if (dctx->dumpfail) |
| 10742 | dns_badcache_print(dctx->view->view->failcache, |
| 10743 | "SERVFAIL cache" , dctx->fp); |
| 10744 | dns_db_detach(&dctx->cache); |
| 10745 | } |
| 10746 | if (dctx->dumpzones) { |
| 10747 | style = &dns_master_style_full; |
| 10748 | nextzone: |
| 10749 | if (dctx->version != NULL) |
| 10750 | dns_db_closeversion(dctx->db, &dctx->version, |
| 10751 | false); |
| 10752 | if (dctx->db != NULL) |
| 10753 | dns_db_detach(&dctx->db); |
| 10754 | if (dctx->zone == NULL) |
| 10755 | dctx->zone = ISC_LIST_HEAD(dctx->view->zonelist); |
| 10756 | else |
| 10757 | dctx->zone = ISC_LIST_NEXT(dctx->zone, link); |
| 10758 | if (dctx->zone != NULL) { |
| 10759 | /* start zone dump */ |
| 10760 | dns_zone_name(dctx->zone->zone, buf, sizeof(buf)); |
| 10761 | fprintf(dctx->fp, ";\n; Zone dump of '%s'\n;\n" , buf); |
| 10762 | result = dns_zone_getdb(dctx->zone->zone, &dctx->db); |
| 10763 | if (result != ISC_R_SUCCESS) { |
| 10764 | fprintf(dctx->fp, "; %s\n" , |
| 10765 | dns_result_totext(result)); |
| 10766 | goto nextzone; |
| 10767 | } |
| 10768 | dns_db_currentversion(dctx->db, &dctx->version); |
| 10769 | result = dns_master_dumptostreaminc(dctx->mctx, |
| 10770 | dctx->db, |
| 10771 | dctx->version, |
| 10772 | style, dctx->fp, |
| 10773 | dctx->task, |
| 10774 | dumpdone, dctx, |
| 10775 | &dctx->mdctx); |
| 10776 | if (result == DNS_R_CONTINUE) |
| 10777 | return; |
| 10778 | if (result == ISC_R_NOTIMPLEMENTED) { |
| 10779 | fprintf(dctx->fp, "; %s\n" , |
| 10780 | dns_result_totext(result)); |
| 10781 | result = ISC_R_SUCCESS; |
| 10782 | POST(result); |
| 10783 | goto nextzone; |
| 10784 | } |
| 10785 | if (result != ISC_R_SUCCESS) |
| 10786 | goto cleanup; |
| 10787 | } |
| 10788 | } |
| 10789 | if (dctx->view != NULL) |
| 10790 | dctx->view = ISC_LIST_NEXT(dctx->view, link); |
| 10791 | if (dctx->view != NULL) |
| 10792 | goto nextview; |
| 10793 | done: |
| 10794 | fprintf(dctx->fp, "; Dump complete\n" ); |
| 10795 | result = isc_stdio_flush(dctx->fp); |
| 10796 | if (result == ISC_R_SUCCESS) |
| 10797 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10798 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10799 | "dumpdb complete" ); |
| 10800 | cleanup: |
| 10801 | if (result != ISC_R_SUCCESS) |
| 10802 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10803 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 10804 | "dumpdb failed: %s" , dns_result_totext(result)); |
| 10805 | dumpcontext_destroy(dctx); |
| 10806 | } |
| 10807 | |
| 10808 | isc_result_t |
| 10809 | named_server_dumpdb(named_server_t *server, isc_lex_t *lex, |
| 10810 | isc_buffer_t **text) |
| 10811 | { |
| 10812 | struct dumpcontext *dctx = NULL; |
| 10813 | dns_view_t *view; |
| 10814 | isc_result_t result; |
| 10815 | char *ptr; |
| 10816 | const char *sep; |
| 10817 | bool found; |
| 10818 | |
| 10819 | /* Skip the command name. */ |
| 10820 | ptr = next_token(lex, NULL); |
| 10821 | if (ptr == NULL) |
| 10822 | return (ISC_R_UNEXPECTEDEND); |
| 10823 | |
| 10824 | dctx = isc_mem_get(server->mctx, sizeof(*dctx)); |
| 10825 | if (dctx == NULL) |
| 10826 | return (ISC_R_NOMEMORY); |
| 10827 | |
| 10828 | dctx->mctx = server->mctx; |
| 10829 | dctx->dumpcache = true; |
| 10830 | dctx->dumpadb = true; |
| 10831 | dctx->dumpbad = true; |
| 10832 | dctx->dumpfail = true; |
| 10833 | dctx->dumpzones = false; |
| 10834 | dctx->fp = NULL; |
| 10835 | ISC_LIST_INIT(dctx->viewlist); |
| 10836 | dctx->view = NULL; |
| 10837 | dctx->zone = NULL; |
| 10838 | dctx->cache = NULL; |
| 10839 | dctx->mdctx = NULL; |
| 10840 | dctx->db = NULL; |
| 10841 | dctx->cache = NULL; |
| 10842 | dctx->task = NULL; |
| 10843 | dctx->version = NULL; |
| 10844 | isc_task_attach(server->task, &dctx->task); |
| 10845 | |
| 10846 | CHECKMF(isc_stdio_open(server->dumpfile, "w" , &dctx->fp), |
| 10847 | "could not open dump file" , server->dumpfile); |
| 10848 | |
| 10849 | ptr = next_token(lex, NULL); |
| 10850 | sep = (ptr == NULL) ? "" : ": " ; |
| 10851 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 10852 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 10853 | "dumpdb started%s%s" , sep, (ptr != NULL) ? ptr : "" ); |
| 10854 | |
| 10855 | if (ptr != NULL && strcmp(ptr, "-all" ) == 0) { |
| 10856 | /* also dump zones */ |
| 10857 | dctx->dumpzones = true; |
| 10858 | ptr = next_token(lex, NULL); |
| 10859 | } else if (ptr != NULL && strcmp(ptr, "-cache" ) == 0) { |
| 10860 | /* this is the default */ |
| 10861 | ptr = next_token(lex, NULL); |
| 10862 | } else if (ptr != NULL && strcmp(ptr, "-zones" ) == 0) { |
| 10863 | /* only dump zones, suppress caches */ |
| 10864 | dctx->dumpadb = false; |
| 10865 | dctx->dumpbad = false; |
| 10866 | dctx->dumpcache = false; |
| 10867 | dctx->dumpfail = false; |
| 10868 | dctx->dumpzones = true; |
| 10869 | ptr = next_token(lex, NULL); |
| 10870 | } else if (ptr != NULL && strcmp(ptr, "-adb" ) == 0) { |
| 10871 | /* only dump adb, suppress other caches */ |
| 10872 | dctx->dumpbad = false; |
| 10873 | dctx->dumpcache = false; |
| 10874 | dctx->dumpfail = false; |
| 10875 | ptr = next_token(lex, NULL); |
| 10876 | } else if (ptr != NULL && strcmp(ptr, "-bad" ) == 0) { |
| 10877 | /* only dump badcache, suppress other caches */ |
| 10878 | dctx->dumpadb = false; |
| 10879 | dctx->dumpcache = false; |
| 10880 | dctx->dumpfail = false; |
| 10881 | ptr = next_token(lex, NULL); |
| 10882 | } else if (ptr != NULL && strcmp(ptr, "-fail" ) == 0) { |
| 10883 | /* only dump servfail cache, suppress other caches */ |
| 10884 | dctx->dumpadb = false; |
| 10885 | dctx->dumpbad = false; |
| 10886 | dctx->dumpcache = false; |
| 10887 | ptr = next_token(lex, NULL); |
| 10888 | } |
| 10889 | |
| 10890 | nextview: |
| 10891 | found = false; |
| 10892 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 10893 | view != NULL; |
| 10894 | view = ISC_LIST_NEXT(view, link)) |
| 10895 | { |
| 10896 | if (ptr != NULL && strcmp(view->name, ptr) != 0) |
| 10897 | continue; |
| 10898 | found = true; |
| 10899 | CHECK(add_view_tolist(dctx, view)); |
| 10900 | } |
| 10901 | if (ptr != NULL) { |
| 10902 | if (!found) { |
| 10903 | CHECK(putstr(text, "view '" )); |
| 10904 | CHECK(putstr(text, ptr)); |
| 10905 | CHECK(putstr(text, "' not found" )); |
| 10906 | CHECK(putnull(text)); |
| 10907 | result = ISC_R_NOTFOUND; |
| 10908 | dumpdone(dctx, result); |
| 10909 | return (result); |
| 10910 | } |
| 10911 | ptr = next_token(lex, NULL); |
| 10912 | if (ptr != NULL) |
| 10913 | goto nextview; |
| 10914 | } |
| 10915 | dumpdone(dctx, ISC_R_SUCCESS); |
| 10916 | return (ISC_R_SUCCESS); |
| 10917 | |
| 10918 | cleanup: |
| 10919 | if (dctx != NULL) |
| 10920 | dumpcontext_destroy(dctx); |
| 10921 | return (result); |
| 10922 | } |
| 10923 | |
| 10924 | isc_result_t |
| 10925 | named_server_dumpsecroots(named_server_t *server, isc_lex_t *lex, |
| 10926 | isc_buffer_t **text) |
| 10927 | { |
| 10928 | dns_view_t *view; |
| 10929 | dns_keytable_t *secroots = NULL; |
| 10930 | dns_ntatable_t *ntatable = NULL; |
| 10931 | isc_result_t result; |
| 10932 | char *ptr; |
| 10933 | FILE *fp = NULL; |
| 10934 | isc_time_t now; |
| 10935 | char tbuf[64]; |
| 10936 | |
| 10937 | /* Skip the command name. */ |
| 10938 | ptr = next_token(lex, text); |
| 10939 | if (ptr == NULL) |
| 10940 | return (ISC_R_UNEXPECTEDEND); |
| 10941 | |
| 10942 | /* "-" here means print the output instead of dumping to file */ |
| 10943 | ptr = next_token(lex, text); |
| 10944 | if (ptr != NULL && strcmp(ptr, "-" ) == 0) |
| 10945 | ptr = next_token(lex, text); |
| 10946 | else { |
| 10947 | result = isc_stdio_open(server->secrootsfile, "w" , &fp); |
| 10948 | if (result != ISC_R_SUCCESS) { |
| 10949 | (void) putstr(text, "could not open " ); |
| 10950 | (void) putstr(text, server->secrootsfile); |
| 10951 | CHECKMF(result, "could not open secroots dump file" , |
| 10952 | server->secrootsfile); |
| 10953 | } |
| 10954 | } |
| 10955 | |
| 10956 | TIME_NOW(&now); |
| 10957 | isc_time_formattimestamp(&now, tbuf, sizeof(tbuf)); |
| 10958 | CHECK(putstr(text, "secure roots as of " )); |
| 10959 | CHECK(putstr(text, tbuf)); |
| 10960 | CHECK(putstr(text, ":\n" )); |
| 10961 | |
| 10962 | do { |
| 10963 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 10964 | view != NULL; |
| 10965 | view = ISC_LIST_NEXT(view, link)) |
| 10966 | { |
| 10967 | if (ptr != NULL && strcmp(view->name, ptr) != 0) |
| 10968 | continue; |
| 10969 | if (secroots != NULL) |
| 10970 | dns_keytable_detach(&secroots); |
| 10971 | result = dns_view_getsecroots(view, &secroots); |
| 10972 | if (result == ISC_R_NOTFOUND) { |
| 10973 | result = ISC_R_SUCCESS; |
| 10974 | continue; |
| 10975 | } |
| 10976 | CHECK(putstr(text, "\n Start view " )); |
| 10977 | CHECK(putstr(text, view->name)); |
| 10978 | CHECK(putstr(text, "\n Secure roots:\n\n" )); |
| 10979 | CHECK(dns_keytable_totext(secroots, text)); |
| 10980 | |
| 10981 | if (ntatable != NULL) |
| 10982 | dns_ntatable_detach(&ntatable); |
| 10983 | result = dns_view_getntatable(view, &ntatable); |
| 10984 | if (result == ISC_R_NOTFOUND) { |
| 10985 | result = ISC_R_SUCCESS; |
| 10986 | continue; |
| 10987 | } |
| 10988 | CHECK(putstr(text, "\n Negative trust anchors:\n\n" )); |
| 10989 | CHECK(dns_ntatable_totext(ntatable, NULL, text)); |
| 10990 | } |
| 10991 | if (ptr != NULL) |
| 10992 | ptr = next_token(lex, text); |
| 10993 | } while (ptr != NULL); |
| 10994 | |
| 10995 | cleanup: |
| 10996 | if (isc_buffer_usedlength(*text) > 0) { |
| 10997 | if (fp != NULL) |
| 10998 | (void)putstr(text, "\n" ); |
| 10999 | else |
| 11000 | (void)putnull(text); |
| 11001 | } |
| 11002 | if (secroots != NULL) |
| 11003 | dns_keytable_detach(&secroots); |
| 11004 | if (ntatable != NULL) |
| 11005 | dns_ntatable_detach(&ntatable); |
| 11006 | if (fp != NULL) { |
| 11007 | fprintf(fp, "%.*s" , (int) isc_buffer_usedlength(*text), |
| 11008 | (char *) isc_buffer_base(*text)); |
| 11009 | isc_buffer_clear(*text); |
| 11010 | (void)isc_stdio_close(fp); |
| 11011 | } |
| 11012 | if (result == ISC_R_SUCCESS) |
| 11013 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11014 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11015 | "dumpsecroots complete" ); |
| 11016 | else |
| 11017 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11018 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11019 | "dumpsecroots failed: %s" , |
| 11020 | dns_result_totext(result)); |
| 11021 | return (result); |
| 11022 | } |
| 11023 | |
| 11024 | isc_result_t |
| 11025 | named_server_dumprecursing(named_server_t *server) { |
| 11026 | FILE *fp = NULL; |
| 11027 | dns_view_t *view; |
| 11028 | isc_result_t result; |
| 11029 | |
| 11030 | CHECKMF(isc_stdio_open(server->recfile, "w" , &fp), |
| 11031 | "could not open dump file" , server->recfile); |
| 11032 | fprintf(fp, ";\n; Recursing Queries\n;\n" ); |
| 11033 | ns_interfacemgr_dumprecursing(fp, server->interfacemgr); |
| 11034 | |
| 11035 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11036 | view != NULL; |
| 11037 | view = ISC_LIST_NEXT(view, link)) |
| 11038 | { |
| 11039 | fprintf(fp, ";\n; Active fetch domains [view: %s]\n;\n" , |
| 11040 | view->name); |
| 11041 | dns_resolver_dumpfetches(view->resolver, |
| 11042 | isc_statsformat_file, fp); |
| 11043 | } |
| 11044 | |
| 11045 | fprintf(fp, "; Dump complete\n" ); |
| 11046 | |
| 11047 | cleanup: |
| 11048 | if (fp != NULL) |
| 11049 | result = isc_stdio_close(fp); |
| 11050 | if (result == ISC_R_SUCCESS) |
| 11051 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11052 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11053 | "dumprecursing complete" ); |
| 11054 | else |
| 11055 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11056 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11057 | "dumprecursing failed: %s" , |
| 11058 | dns_result_totext(result)); |
| 11059 | return (result); |
| 11060 | } |
| 11061 | |
| 11062 | isc_result_t |
| 11063 | named_server_setdebuglevel(named_server_t *server, isc_lex_t *lex) { |
| 11064 | char *ptr; |
| 11065 | char *endp; |
| 11066 | long newlevel; |
| 11067 | |
| 11068 | UNUSED(server); |
| 11069 | |
| 11070 | /* Skip the command name. */ |
| 11071 | ptr = next_token(lex, NULL); |
| 11072 | if (ptr == NULL) |
| 11073 | return (ISC_R_UNEXPECTEDEND); |
| 11074 | |
| 11075 | /* Look for the new level name. */ |
| 11076 | ptr = next_token(lex, NULL); |
| 11077 | if (ptr == NULL) { |
| 11078 | if (named_g_debuglevel < 99) |
| 11079 | named_g_debuglevel++; |
| 11080 | } else { |
| 11081 | newlevel = strtol(ptr, &endp, 10); |
| 11082 | if (*endp != '\0' || newlevel < 0 || newlevel > 99) |
| 11083 | return (ISC_R_RANGE); |
| 11084 | named_g_debuglevel = (unsigned int)newlevel; |
| 11085 | } |
| 11086 | isc_log_setdebuglevel(named_g_lctx, named_g_debuglevel); |
| 11087 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11088 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11089 | "debug level is now %u" , named_g_debuglevel); |
| 11090 | return (ISC_R_SUCCESS); |
| 11091 | } |
| 11092 | |
| 11093 | isc_result_t |
| 11094 | named_server_validation(named_server_t *server, isc_lex_t *lex, |
| 11095 | isc_buffer_t **text) |
| 11096 | { |
| 11097 | char *ptr; |
| 11098 | dns_view_t *view; |
| 11099 | bool changed = false; |
| 11100 | isc_result_t result; |
| 11101 | bool enable = true, set = true, first = true; |
| 11102 | |
| 11103 | /* Skip the command name. */ |
| 11104 | ptr = next_token(lex, text); |
| 11105 | if (ptr == NULL) |
| 11106 | return (ISC_R_UNEXPECTEDEND); |
| 11107 | |
| 11108 | /* Find out what we are to do. */ |
| 11109 | ptr = next_token(lex, text); |
| 11110 | if (ptr == NULL) |
| 11111 | return (ISC_R_UNEXPECTEDEND); |
| 11112 | |
| 11113 | if (!strcasecmp(ptr, "on" ) || !strcasecmp(ptr, "yes" ) || |
| 11114 | !strcasecmp(ptr, "enable" ) || !strcasecmp(ptr, "true" )) { |
| 11115 | enable = true; |
| 11116 | } else if (!strcasecmp(ptr, "off" ) || !strcasecmp(ptr, "no" ) || |
| 11117 | !strcasecmp(ptr, "disable" ) || !strcasecmp(ptr, "false" )) { |
| 11118 | enable = false; |
| 11119 | } else if (!strcasecmp(ptr, "check" ) || !strcasecmp(ptr, "status" )) { |
| 11120 | set = false; |
| 11121 | } else { |
| 11122 | return (DNS_R_SYNTAX); |
| 11123 | } |
| 11124 | |
| 11125 | /* Look for the view name. */ |
| 11126 | ptr = next_token(lex, text); |
| 11127 | |
| 11128 | result = isc_task_beginexclusive(server->task); |
| 11129 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11130 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11131 | view != NULL; |
| 11132 | view = ISC_LIST_NEXT(view, link)) |
| 11133 | { |
| 11134 | if (ptr != NULL && strcasecmp(ptr, view->name) != 0) |
| 11135 | continue; |
| 11136 | CHECK(dns_view_flushcache(view, false)); |
| 11137 | |
| 11138 | if (set) { |
| 11139 | view->enablevalidation = enable; |
| 11140 | changed = true; |
| 11141 | } else { |
| 11142 | if (!first) |
| 11143 | CHECK(putstr(text, "\n" )); |
| 11144 | CHECK(putstr(text, "DNSSEC validation is " )); |
| 11145 | CHECK(putstr(text, view->enablevalidation |
| 11146 | ? "enabled" : "disabled" )); |
| 11147 | CHECK(putstr(text, " (view " )); |
| 11148 | CHECK(putstr(text, view->name)); |
| 11149 | CHECK(putstr(text, ")" )); |
| 11150 | CHECK(putnull(text)); |
| 11151 | first = false; |
| 11152 | } |
| 11153 | } |
| 11154 | |
| 11155 | if (!set) |
| 11156 | result = ISC_R_SUCCESS; |
| 11157 | else if (changed) |
| 11158 | result = ISC_R_SUCCESS; |
| 11159 | else |
| 11160 | result = ISC_R_FAILURE; |
| 11161 | cleanup: |
| 11162 | isc_task_endexclusive(server->task); |
| 11163 | return (result); |
| 11164 | } |
| 11165 | |
| 11166 | isc_result_t |
| 11167 | named_server_flushcache(named_server_t *server, isc_lex_t *lex) { |
| 11168 | char *ptr; |
| 11169 | dns_view_t *view; |
| 11170 | bool flushed; |
| 11171 | bool found; |
| 11172 | isc_result_t result; |
| 11173 | named_cache_t *nsc; |
| 11174 | |
| 11175 | /* Skip the command name. */ |
| 11176 | ptr = next_token(lex, NULL); |
| 11177 | if (ptr == NULL) |
| 11178 | return (ISC_R_UNEXPECTEDEND); |
| 11179 | |
| 11180 | /* Look for the view name. */ |
| 11181 | ptr = next_token(lex, NULL); |
| 11182 | |
| 11183 | result = isc_task_beginexclusive(server->task); |
| 11184 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11185 | flushed = true; |
| 11186 | found = false; |
| 11187 | |
| 11188 | /* |
| 11189 | * Flushing a cache is tricky when caches are shared by multiple views. |
| 11190 | * We first identify which caches should be flushed in the local cache |
| 11191 | * list, flush these caches, and then update other views that refer to |
| 11192 | * the flushed cache DB. |
| 11193 | */ |
| 11194 | if (ptr != NULL) { |
| 11195 | /* |
| 11196 | * Mark caches that need to be flushed. This is an O(#view^2) |
| 11197 | * operation in the very worst case, but should be normally |
| 11198 | * much more lightweight because only a few (most typically just |
| 11199 | * one) views will match. |
| 11200 | */ |
| 11201 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11202 | view != NULL; |
| 11203 | view = ISC_LIST_NEXT(view, link)) |
| 11204 | { |
| 11205 | if (strcasecmp(ptr, view->name) != 0) |
| 11206 | continue; |
| 11207 | found = true; |
| 11208 | for (nsc = ISC_LIST_HEAD(server->cachelist); |
| 11209 | nsc != NULL; |
| 11210 | nsc = ISC_LIST_NEXT(nsc, link)) { |
| 11211 | if (nsc->cache == view->cache) |
| 11212 | break; |
| 11213 | } |
| 11214 | INSIST(nsc != NULL); |
| 11215 | nsc->needflush = true; |
| 11216 | } |
| 11217 | } else |
| 11218 | found = true; |
| 11219 | |
| 11220 | /* Perform flush */ |
| 11221 | for (nsc = ISC_LIST_HEAD(server->cachelist); |
| 11222 | nsc != NULL; |
| 11223 | nsc = ISC_LIST_NEXT(nsc, link)) { |
| 11224 | if (ptr != NULL && !nsc->needflush) |
| 11225 | continue; |
| 11226 | nsc->needflush = true; |
| 11227 | result = dns_view_flushcache(nsc->primaryview, false); |
| 11228 | if (result != ISC_R_SUCCESS) { |
| 11229 | flushed = false; |
| 11230 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11231 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11232 | "flushing cache in view '%s' failed: %s" , |
| 11233 | nsc->primaryview->name, |
| 11234 | isc_result_totext(result)); |
| 11235 | } |
| 11236 | } |
| 11237 | |
| 11238 | /* |
| 11239 | * Fix up views that share a flushed cache: let the views update the |
| 11240 | * cache DB they're referring to. This could also be an expensive |
| 11241 | * operation, but should typically be marginal: the inner loop is only |
| 11242 | * necessary for views that share a cache, and if there are many such |
| 11243 | * views the number of shared cache should normally be small. |
| 11244 | * A worst case is that we have n views and n/2 caches, each shared by |
| 11245 | * two views. Then this will be a O(n^2/4) operation. |
| 11246 | */ |
| 11247 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11248 | view != NULL; |
| 11249 | view = ISC_LIST_NEXT(view, link)) |
| 11250 | { |
| 11251 | if (!dns_view_iscacheshared(view)) |
| 11252 | continue; |
| 11253 | for (nsc = ISC_LIST_HEAD(server->cachelist); |
| 11254 | nsc != NULL; |
| 11255 | nsc = ISC_LIST_NEXT(nsc, link)) { |
| 11256 | if (!nsc->needflush || nsc->cache != view->cache) |
| 11257 | continue; |
| 11258 | result = dns_view_flushcache(view, true); |
| 11259 | if (result != ISC_R_SUCCESS) { |
| 11260 | flushed = false; |
| 11261 | isc_log_write(named_g_lctx, |
| 11262 | NAMED_LOGCATEGORY_GENERAL, |
| 11263 | NAMED_LOGMODULE_SERVER, |
| 11264 | ISC_LOG_ERROR, |
| 11265 | "fixing cache in view '%s' " |
| 11266 | "failed: %s" , view->name, |
| 11267 | isc_result_totext(result)); |
| 11268 | } |
| 11269 | } |
| 11270 | } |
| 11271 | |
| 11272 | /* Cleanup the cache list. */ |
| 11273 | for (nsc = ISC_LIST_HEAD(server->cachelist); |
| 11274 | nsc != NULL; |
| 11275 | nsc = ISC_LIST_NEXT(nsc, link)) { |
| 11276 | nsc->needflush = false; |
| 11277 | } |
| 11278 | |
| 11279 | if (flushed && found) { |
| 11280 | if (ptr != NULL) |
| 11281 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11282 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11283 | "flushing cache in view '%s' succeeded" , |
| 11284 | ptr); |
| 11285 | else |
| 11286 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11287 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11288 | "flushing caches in all views succeeded" ); |
| 11289 | result = ISC_R_SUCCESS; |
| 11290 | } else { |
| 11291 | if (!found) { |
| 11292 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11293 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11294 | "flushing cache in view '%s' failed: " |
| 11295 | "view not found" , ptr); |
| 11296 | result = ISC_R_NOTFOUND; |
| 11297 | } else |
| 11298 | result = ISC_R_FAILURE; |
| 11299 | } |
| 11300 | isc_task_endexclusive(server->task); |
| 11301 | return (result); |
| 11302 | } |
| 11303 | |
| 11304 | isc_result_t |
| 11305 | named_server_flushnode(named_server_t *server, isc_lex_t *lex, |
| 11306 | bool tree) |
| 11307 | { |
| 11308 | char *ptr, *viewname; |
| 11309 | char target[DNS_NAME_FORMATSIZE]; |
| 11310 | dns_view_t *view; |
| 11311 | bool flushed; |
| 11312 | bool found; |
| 11313 | isc_result_t result; |
| 11314 | isc_buffer_t b; |
| 11315 | dns_fixedname_t fixed; |
| 11316 | dns_name_t *name; |
| 11317 | |
| 11318 | /* Skip the command name. */ |
| 11319 | ptr = next_token(lex, NULL); |
| 11320 | if (ptr == NULL) |
| 11321 | return (ISC_R_UNEXPECTEDEND); |
| 11322 | |
| 11323 | /* Find the domain name to flush. */ |
| 11324 | ptr = next_token(lex, NULL); |
| 11325 | if (ptr == NULL) |
| 11326 | return (ISC_R_UNEXPECTEDEND); |
| 11327 | |
| 11328 | strlcpy(target, ptr, DNS_NAME_FORMATSIZE); |
| 11329 | isc_buffer_constinit(&b, target, strlen(target)); |
| 11330 | isc_buffer_add(&b, strlen(target)); |
| 11331 | name = dns_fixedname_initname(&fixed); |
| 11332 | result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL); |
| 11333 | if (result != ISC_R_SUCCESS) |
| 11334 | return (result); |
| 11335 | |
| 11336 | /* Look for the view name. */ |
| 11337 | viewname = next_token(lex, NULL); |
| 11338 | |
| 11339 | result = isc_task_beginexclusive(server->task); |
| 11340 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11341 | flushed = true; |
| 11342 | found = false; |
| 11343 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11344 | view != NULL; |
| 11345 | view = ISC_LIST_NEXT(view, link)) |
| 11346 | { |
| 11347 | if (viewname != NULL && strcasecmp(viewname, view->name) != 0) |
| 11348 | continue; |
| 11349 | found = true; |
| 11350 | /* |
| 11351 | * It's a little inefficient to try flushing name for all views |
| 11352 | * if some of the views share a single cache. But since the |
| 11353 | * operation is lightweight we prefer simplicity here. |
| 11354 | */ |
| 11355 | result = dns_view_flushnode(view, name, tree); |
| 11356 | if (result != ISC_R_SUCCESS) { |
| 11357 | flushed = false; |
| 11358 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11359 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11360 | "flushing %s '%s' in cache view '%s' " |
| 11361 | "failed: %s" , |
| 11362 | tree ? "tree" : "name" , |
| 11363 | target, view->name, |
| 11364 | isc_result_totext(result)); |
| 11365 | } |
| 11366 | } |
| 11367 | if (flushed && found) { |
| 11368 | if (viewname != NULL) |
| 11369 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11370 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11371 | "flushing %s '%s' in cache view '%s' " |
| 11372 | "succeeded" , |
| 11373 | tree ? "tree" : "name" , |
| 11374 | target, viewname); |
| 11375 | else |
| 11376 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11377 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11378 | "flushing %s '%s' in all cache views " |
| 11379 | "succeeded" , |
| 11380 | tree ? "tree" : "name" , |
| 11381 | target); |
| 11382 | result = ISC_R_SUCCESS; |
| 11383 | } else { |
| 11384 | if (!found) |
| 11385 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11386 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 11387 | "flushing %s '%s' in cache view '%s' " |
| 11388 | "failed: view not found" , |
| 11389 | tree ? "tree" : "name" , |
| 11390 | target, viewname); |
| 11391 | result = ISC_R_FAILURE; |
| 11392 | } |
| 11393 | isc_task_endexclusive(server->task); |
| 11394 | return (result); |
| 11395 | } |
| 11396 | |
| 11397 | isc_result_t |
| 11398 | named_server_status(named_server_t *server, isc_buffer_t **text) { |
| 11399 | isc_result_t result; |
| 11400 | unsigned int zonecount, xferrunning, xferdeferred, soaqueries; |
| 11401 | unsigned int automatic; |
| 11402 | const char *ob = "" , *cb = "" , *alt = "" ; |
| 11403 | char boottime[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 11404 | char configtime[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 11405 | char line[1024], hostname[256]; |
| 11406 | |
| 11407 | if (named_g_server->version_set) { |
| 11408 | ob = " (" ; |
| 11409 | cb = ")" ; |
| 11410 | if (named_g_server->version == NULL) |
| 11411 | alt = "version.bind/txt/ch disabled" ; |
| 11412 | else |
| 11413 | alt = named_g_server->version; |
| 11414 | } |
| 11415 | zonecount = dns_zonemgr_getcount(server->zonemgr, DNS_ZONESTATE_ANY); |
| 11416 | xferrunning = dns_zonemgr_getcount(server->zonemgr, |
| 11417 | DNS_ZONESTATE_XFERRUNNING); |
| 11418 | xferdeferred = dns_zonemgr_getcount(server->zonemgr, |
| 11419 | DNS_ZONESTATE_XFERDEFERRED); |
| 11420 | soaqueries = dns_zonemgr_getcount(server->zonemgr, |
| 11421 | DNS_ZONESTATE_SOAQUERY); |
| 11422 | automatic = dns_zonemgr_getcount(server->zonemgr, |
| 11423 | DNS_ZONESTATE_AUTOMATIC); |
| 11424 | |
| 11425 | isc_time_formathttptimestamp(&named_g_boottime, boottime, |
| 11426 | sizeof(boottime)); |
| 11427 | isc_time_formathttptimestamp(&named_g_configtime, configtime, |
| 11428 | sizeof(configtime)); |
| 11429 | |
| 11430 | snprintf(line, sizeof(line), "version: %s %s%s%s <id:%s>%s%s%s\n" , |
| 11431 | named_g_product, named_g_version, |
| 11432 | (*named_g_description != '\0') ? " " : "" , |
| 11433 | named_g_description, named_g_srcid, ob, alt, cb); |
| 11434 | CHECK(putstr(text, line)); |
| 11435 | |
| 11436 | result = named_os_gethostname(hostname, sizeof(hostname)); |
| 11437 | if (result != ISC_R_SUCCESS) |
| 11438 | strlcpy(hostname, "localhost" , sizeof(hostname)); |
| 11439 | snprintf(line, sizeof(line), "running on %s: %s\n" , |
| 11440 | hostname, named_os_uname()); |
| 11441 | CHECK(putstr(text, line)); |
| 11442 | |
| 11443 | snprintf(line, sizeof(line), "boot time: %s\n" , boottime); |
| 11444 | CHECK(putstr(text, line)); |
| 11445 | |
| 11446 | snprintf(line, sizeof(line), "last configured: %s\n" , configtime); |
| 11447 | CHECK(putstr(text, line)); |
| 11448 | |
| 11449 | if (named_g_chrootdir != NULL) { |
| 11450 | snprintf(line, sizeof(line), "configuration file: %s (%s%s)\n" , |
| 11451 | named_g_conffile, named_g_chrootdir, named_g_conffile); |
| 11452 | } else { |
| 11453 | snprintf(line, sizeof(line), "configuration file: %s\n" , |
| 11454 | named_g_conffile); |
| 11455 | } |
| 11456 | CHECK(putstr(text, line)); |
| 11457 | |
| 11458 | snprintf(line, sizeof(line), "CPUs found: %u\n" , named_g_cpus_detected); |
| 11459 | CHECK(putstr(text, line)); |
| 11460 | |
| 11461 | snprintf(line, sizeof(line), "worker threads: %u\n" , named_g_cpus); |
| 11462 | CHECK(putstr(text, line)); |
| 11463 | |
| 11464 | snprintf(line, sizeof(line), "UDP listeners per interface: %u\n" , |
| 11465 | named_g_udpdisp); |
| 11466 | CHECK(putstr(text, line)); |
| 11467 | |
| 11468 | snprintf(line, sizeof(line), "number of zones: %u (%u automatic)\n" , |
| 11469 | zonecount, automatic); |
| 11470 | CHECK(putstr(text, line)); |
| 11471 | |
| 11472 | snprintf(line, sizeof(line), "debug level: %u\n" , named_g_debuglevel); |
| 11473 | CHECK(putstr(text, line)); |
| 11474 | |
| 11475 | snprintf(line, sizeof(line), "xfers running: %u\n" , xferrunning); |
| 11476 | CHECK(putstr(text, line)); |
| 11477 | |
| 11478 | snprintf(line, sizeof(line), "xfers deferred: %u\n" , xferdeferred); |
| 11479 | CHECK(putstr(text, line)); |
| 11480 | |
| 11481 | snprintf(line, sizeof(line), "soa queries in progress: %u\n" , |
| 11482 | soaqueries); |
| 11483 | CHECK(putstr(text, line)); |
| 11484 | |
| 11485 | snprintf(line, sizeof(line), "query logging is %s\n" , |
| 11486 | ns_server_getoption(server->sctx, NS_SERVER_LOGQUERIES) |
| 11487 | ? "ON" : "OFF" ); |
| 11488 | CHECK(putstr(text, line)); |
| 11489 | |
| 11490 | snprintf(line, sizeof(line), "recursive clients: %u/%u/%u\n" , |
| 11491 | isc_quota_getused(&server->sctx->recursionquota), |
| 11492 | isc_quota_getsoft(&server->sctx->recursionquota), |
| 11493 | isc_quota_getmax(&server->sctx->recursionquota)); |
| 11494 | CHECK(putstr(text, line)); |
| 11495 | |
| 11496 | snprintf(line, sizeof(line), "tcp clients: %u/%u\n" , |
| 11497 | isc_quota_getused(&server->sctx->tcpquota), |
| 11498 | isc_quota_getmax(&server->sctx->tcpquota)); |
| 11499 | CHECK(putstr(text, line)); |
| 11500 | |
| 11501 | if (server->reload_in_progress) { |
| 11502 | CHECK(putstr(text, "reload/reconfig in progress" )); |
| 11503 | } |
| 11504 | |
| 11505 | CHECK(putstr(text, "server is up and running" )); |
| 11506 | CHECK(putnull(text)); |
| 11507 | |
| 11508 | return (ISC_R_SUCCESS); |
| 11509 | cleanup: |
| 11510 | return (result); |
| 11511 | } |
| 11512 | |
| 11513 | isc_result_t |
| 11514 | named_server_testgen(isc_lex_t *lex, isc_buffer_t **text) { |
| 11515 | isc_result_t result; |
| 11516 | char *ptr; |
| 11517 | unsigned long count; |
| 11518 | unsigned long i; |
| 11519 | const unsigned char chars[] = "abcdefghijklmnopqrstuvwxyz0123456789" ; |
| 11520 | |
| 11521 | /* Skip the command name. */ |
| 11522 | ptr = next_token(lex, text); |
| 11523 | if (ptr == NULL) |
| 11524 | return (ISC_R_UNEXPECTEDEND); |
| 11525 | |
| 11526 | ptr = next_token(lex, text); |
| 11527 | if (ptr == NULL) |
| 11528 | count = 26; |
| 11529 | else |
| 11530 | count = strtoul(ptr, NULL, 10); |
| 11531 | |
| 11532 | CHECK(isc_buffer_reserve(text, count)); |
| 11533 | for (i = 0; i < count; i++) |
| 11534 | CHECK(putuint8(text, chars[i % (sizeof(chars) - 1)])); |
| 11535 | |
| 11536 | CHECK(putnull(text)); |
| 11537 | |
| 11538 | cleanup: |
| 11539 | return (result); |
| 11540 | } |
| 11541 | |
| 11542 | static isc_result_t |
| 11543 | delete_keynames(dns_tsig_keyring_t *ring, char *target, |
| 11544 | unsigned int *foundkeys) |
| 11545 | { |
| 11546 | char namestr[DNS_NAME_FORMATSIZE]; |
| 11547 | isc_result_t result; |
| 11548 | dns_rbtnodechain_t chain; |
| 11549 | dns_name_t foundname; |
| 11550 | dns_fixedname_t fixedorigin; |
| 11551 | dns_name_t *origin; |
| 11552 | dns_rbtnode_t *node; |
| 11553 | dns_tsigkey_t *tkey; |
| 11554 | |
| 11555 | dns_name_init(&foundname, NULL); |
| 11556 | origin = dns_fixedname_initname(&fixedorigin); |
| 11557 | |
| 11558 | again: |
| 11559 | dns_rbtnodechain_init(&chain, ring->mctx); |
| 11560 | result = dns_rbtnodechain_first(&chain, ring->keys, &foundname, |
| 11561 | origin); |
| 11562 | if (result == ISC_R_NOTFOUND) { |
| 11563 | dns_rbtnodechain_invalidate(&chain); |
| 11564 | return (ISC_R_SUCCESS); |
| 11565 | } |
| 11566 | if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) { |
| 11567 | dns_rbtnodechain_invalidate(&chain); |
| 11568 | return (result); |
| 11569 | } |
| 11570 | |
| 11571 | for (;;) { |
| 11572 | node = NULL; |
| 11573 | dns_rbtnodechain_current(&chain, &foundname, origin, &node); |
| 11574 | tkey = node->data; |
| 11575 | |
| 11576 | if (tkey != NULL) { |
| 11577 | if (!tkey->generated) |
| 11578 | goto nextkey; |
| 11579 | |
| 11580 | dns_name_format(&tkey->name, namestr, sizeof(namestr)); |
| 11581 | if (strcmp(namestr, target) == 0) { |
| 11582 | (*foundkeys)++; |
| 11583 | dns_rbtnodechain_invalidate(&chain); |
| 11584 | (void)dns_rbt_deletename(ring->keys, |
| 11585 | &tkey->name, |
| 11586 | false); |
| 11587 | goto again; |
| 11588 | } |
| 11589 | } |
| 11590 | |
| 11591 | nextkey: |
| 11592 | result = dns_rbtnodechain_next(&chain, &foundname, origin); |
| 11593 | if (result == ISC_R_NOMORE) |
| 11594 | break; |
| 11595 | if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) { |
| 11596 | dns_rbtnodechain_invalidate(&chain); |
| 11597 | return (result); |
| 11598 | } |
| 11599 | } |
| 11600 | |
| 11601 | return (ISC_R_SUCCESS); |
| 11602 | } |
| 11603 | |
| 11604 | isc_result_t |
| 11605 | named_server_tsigdelete(named_server_t *server, isc_lex_t *lex, |
| 11606 | isc_buffer_t **text) |
| 11607 | { |
| 11608 | isc_result_t result; |
| 11609 | dns_view_t *view; |
| 11610 | unsigned int foundkeys = 0; |
| 11611 | char *ptr, *viewname; |
| 11612 | char target[DNS_NAME_FORMATSIZE]; |
| 11613 | char fbuf[16]; |
| 11614 | |
| 11615 | (void)next_token(lex, text); /* skip command name */ |
| 11616 | |
| 11617 | ptr = next_token(lex, text); |
| 11618 | if (ptr == NULL) |
| 11619 | return (ISC_R_UNEXPECTEDEND); |
| 11620 | strlcpy(target, ptr, DNS_NAME_FORMATSIZE); |
| 11621 | |
| 11622 | viewname = next_token(lex, text); |
| 11623 | |
| 11624 | result = isc_task_beginexclusive(server->task); |
| 11625 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11626 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11627 | view != NULL; |
| 11628 | view = ISC_LIST_NEXT(view, link)) { |
| 11629 | if (viewname == NULL || strcmp(view->name, viewname) == 0) { |
| 11630 | RWLOCK(&view->dynamickeys->lock, isc_rwlocktype_write); |
| 11631 | result = delete_keynames(view->dynamickeys, target, |
| 11632 | &foundkeys); |
| 11633 | RWUNLOCK(&view->dynamickeys->lock, |
| 11634 | isc_rwlocktype_write); |
| 11635 | if (result != ISC_R_SUCCESS) { |
| 11636 | isc_task_endexclusive(server->task); |
| 11637 | return (result); |
| 11638 | } |
| 11639 | } |
| 11640 | } |
| 11641 | isc_task_endexclusive(server->task); |
| 11642 | |
| 11643 | snprintf(fbuf, sizeof(fbuf), "%u" , foundkeys); |
| 11644 | |
| 11645 | CHECK(putstr(text, fbuf)); |
| 11646 | CHECK(putstr(text, " tsig keys deleted." )); |
| 11647 | CHECK(putnull(text)); |
| 11648 | |
| 11649 | cleanup: |
| 11650 | return (result); |
| 11651 | } |
| 11652 | |
| 11653 | static isc_result_t |
| 11654 | list_keynames(dns_view_t *view, dns_tsig_keyring_t *ring, isc_buffer_t **text, |
| 11655 | unsigned int *foundkeys) |
| 11656 | { |
| 11657 | char namestr[DNS_NAME_FORMATSIZE]; |
| 11658 | char creatorstr[DNS_NAME_FORMATSIZE]; |
| 11659 | isc_result_t result; |
| 11660 | dns_rbtnodechain_t chain; |
| 11661 | dns_name_t foundname; |
| 11662 | dns_fixedname_t fixedorigin; |
| 11663 | dns_name_t *origin; |
| 11664 | dns_rbtnode_t *node; |
| 11665 | dns_tsigkey_t *tkey; |
| 11666 | const char *viewname; |
| 11667 | |
| 11668 | if (view != NULL) |
| 11669 | viewname = view->name; |
| 11670 | else |
| 11671 | viewname = "(global)" ; |
| 11672 | |
| 11673 | dns_name_init(&foundname, NULL); |
| 11674 | origin = dns_fixedname_initname(&fixedorigin); |
| 11675 | dns_rbtnodechain_init(&chain, ring->mctx); |
| 11676 | result = dns_rbtnodechain_first(&chain, ring->keys, &foundname, |
| 11677 | origin); |
| 11678 | if (result == ISC_R_NOTFOUND) { |
| 11679 | dns_rbtnodechain_invalidate(&chain); |
| 11680 | return (ISC_R_SUCCESS); |
| 11681 | } |
| 11682 | if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN) { |
| 11683 | dns_rbtnodechain_invalidate(&chain); |
| 11684 | return (result); |
| 11685 | } |
| 11686 | |
| 11687 | for (;;) { |
| 11688 | node = NULL; |
| 11689 | dns_rbtnodechain_current(&chain, &foundname, origin, &node); |
| 11690 | tkey = node->data; |
| 11691 | |
| 11692 | if (tkey != NULL) { |
| 11693 | dns_name_format(&tkey->name, namestr, sizeof(namestr)); |
| 11694 | if (tkey->generated) { |
| 11695 | dns_name_format(tkey->creator, creatorstr, |
| 11696 | sizeof(creatorstr)); |
| 11697 | if (*foundkeys != 0) |
| 11698 | CHECK(putstr(text, "\n" )); |
| 11699 | CHECK(putstr(text, "view \"" )); |
| 11700 | CHECK(putstr(text, viewname)); |
| 11701 | CHECK(putstr(text, |
| 11702 | "\"; type \"dynamic\"; key \"" )); |
| 11703 | CHECK(putstr(text, namestr)); |
| 11704 | CHECK(putstr(text, "\"; creator \"" )); |
| 11705 | CHECK(putstr(text, creatorstr)); |
| 11706 | CHECK(putstr(text, "\";" )); |
| 11707 | } else { |
| 11708 | if (*foundkeys != 0) |
| 11709 | CHECK(putstr(text, "\n" )); |
| 11710 | CHECK(putstr(text, "view \"" )); |
| 11711 | CHECK(putstr(text, viewname)); |
| 11712 | CHECK(putstr(text, |
| 11713 | "\"; type \"static\"; key \"" )); |
| 11714 | CHECK(putstr(text, namestr)); |
| 11715 | CHECK(putstr(text, "\";" )); |
| 11716 | } |
| 11717 | (*foundkeys)++; |
| 11718 | } |
| 11719 | result = dns_rbtnodechain_next(&chain, &foundname, origin); |
| 11720 | if (result == ISC_R_NOMORE || result == DNS_R_NEWORIGIN) |
| 11721 | break; |
| 11722 | } |
| 11723 | |
| 11724 | return (ISC_R_SUCCESS); |
| 11725 | cleanup: |
| 11726 | dns_rbtnodechain_invalidate(&chain); |
| 11727 | return (result); |
| 11728 | } |
| 11729 | |
| 11730 | isc_result_t |
| 11731 | named_server_tsiglist(named_server_t *server, isc_buffer_t **text) { |
| 11732 | isc_result_t result; |
| 11733 | dns_view_t *view; |
| 11734 | unsigned int foundkeys = 0; |
| 11735 | |
| 11736 | result = isc_task_beginexclusive(server->task); |
| 11737 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11738 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11739 | view != NULL; |
| 11740 | view = ISC_LIST_NEXT(view, link)) { |
| 11741 | RWLOCK(&view->statickeys->lock, isc_rwlocktype_read); |
| 11742 | result = list_keynames(view, view->statickeys, text, |
| 11743 | &foundkeys); |
| 11744 | RWUNLOCK(&view->statickeys->lock, isc_rwlocktype_read); |
| 11745 | if (result != ISC_R_SUCCESS) { |
| 11746 | isc_task_endexclusive(server->task); |
| 11747 | return (result); |
| 11748 | } |
| 11749 | RWLOCK(&view->dynamickeys->lock, isc_rwlocktype_read); |
| 11750 | result = list_keynames(view, view->dynamickeys, text, |
| 11751 | &foundkeys); |
| 11752 | RWUNLOCK(&view->dynamickeys->lock, isc_rwlocktype_read); |
| 11753 | if (result != ISC_R_SUCCESS) { |
| 11754 | isc_task_endexclusive(server->task); |
| 11755 | return (result); |
| 11756 | } |
| 11757 | } |
| 11758 | isc_task_endexclusive(server->task); |
| 11759 | |
| 11760 | if (foundkeys == 0) |
| 11761 | CHECK(putstr(text, "no tsig keys found." )); |
| 11762 | |
| 11763 | if (isc_buffer_usedlength(*text) > 0) |
| 11764 | CHECK(putnull(text)); |
| 11765 | |
| 11766 | cleanup: |
| 11767 | return (result); |
| 11768 | } |
| 11769 | |
| 11770 | /* |
| 11771 | * Act on a "sign" or "loadkeys" command from the command channel. |
| 11772 | */ |
| 11773 | isc_result_t |
| 11774 | named_server_rekey(named_server_t *server, isc_lex_t *lex, |
| 11775 | isc_buffer_t **text) |
| 11776 | { |
| 11777 | isc_result_t result; |
| 11778 | dns_zone_t *zone = NULL; |
| 11779 | dns_zonetype_t type; |
| 11780 | uint16_t keyopts; |
| 11781 | bool fullsign = false; |
| 11782 | char *ptr; |
| 11783 | |
| 11784 | ptr = next_token(lex, text); |
| 11785 | if (ptr == NULL) |
| 11786 | return (ISC_R_UNEXPECTEDEND); |
| 11787 | |
| 11788 | if (strcasecmp(ptr, NAMED_COMMAND_SIGN) == 0) |
| 11789 | fullsign = true; |
| 11790 | |
| 11791 | result = zone_from_args(server, lex, NULL, &zone, NULL, |
| 11792 | text, false); |
| 11793 | if (result != ISC_R_SUCCESS) |
| 11794 | return (result); |
| 11795 | if (zone == NULL) |
| 11796 | return (ISC_R_UNEXPECTEDEND); /* XXX: or do all zones? */ |
| 11797 | |
| 11798 | type = dns_zone_gettype(zone); |
| 11799 | if (type != dns_zone_master) { |
| 11800 | dns_zone_detach(&zone); |
| 11801 | return (DNS_R_NOTMASTER); |
| 11802 | } |
| 11803 | |
| 11804 | keyopts = dns_zone_getkeyopts(zone); |
| 11805 | |
| 11806 | /* "rndc loadkeys" requires "auto-dnssec maintain". */ |
| 11807 | if ((keyopts & DNS_ZONEKEY_ALLOW) == 0) |
| 11808 | result = ISC_R_NOPERM; |
| 11809 | else if ((keyopts & DNS_ZONEKEY_MAINTAIN) == 0 && !fullsign) |
| 11810 | result = ISC_R_NOPERM; |
| 11811 | else |
| 11812 | dns_zone_rekey(zone, fullsign); |
| 11813 | |
| 11814 | dns_zone_detach(&zone); |
| 11815 | return (result); |
| 11816 | } |
| 11817 | |
| 11818 | /* |
| 11819 | * Act on a "sync" command from the command channel. |
| 11820 | */ |
| 11821 | static isc_result_t |
| 11822 | synczone(dns_zone_t *zone, void *uap) { |
| 11823 | bool cleanup = *(bool *)uap; |
| 11824 | isc_result_t result; |
| 11825 | dns_zone_t *raw = NULL; |
| 11826 | char *journal; |
| 11827 | |
| 11828 | dns_zone_getraw(zone, &raw); |
| 11829 | if (raw != NULL) { |
| 11830 | synczone(raw, uap); |
| 11831 | dns_zone_detach(&raw); |
| 11832 | } |
| 11833 | |
| 11834 | result = dns_zone_flush(zone); |
| 11835 | if (result != ISC_R_SUCCESS) |
| 11836 | cleanup = false; |
| 11837 | if (cleanup) { |
| 11838 | journal = dns_zone_getjournal(zone); |
| 11839 | if (journal != NULL) |
| 11840 | (void)isc_file_remove(journal); |
| 11841 | } |
| 11842 | |
| 11843 | return (result); |
| 11844 | } |
| 11845 | |
| 11846 | isc_result_t |
| 11847 | named_server_sync(named_server_t *server, isc_lex_t *lex, isc_buffer_t **text) { |
| 11848 | isc_result_t result, tresult; |
| 11849 | dns_view_t *view; |
| 11850 | dns_zone_t *zone = NULL; |
| 11851 | char classstr[DNS_RDATACLASS_FORMATSIZE]; |
| 11852 | char zonename[DNS_NAME_FORMATSIZE]; |
| 11853 | const char *vname, *sep, *arg; |
| 11854 | bool cleanup = false; |
| 11855 | |
| 11856 | (void) next_token(lex, text); |
| 11857 | |
| 11858 | arg = next_token(lex, text); |
| 11859 | if (arg != NULL && |
| 11860 | (strcmp(arg, "-clean" ) == 0 || strcmp(arg, "-clear" ) == 0)) { |
| 11861 | cleanup = true; |
| 11862 | arg = next_token(lex, text); |
| 11863 | } |
| 11864 | |
| 11865 | result = zone_from_args(server, lex, arg, &zone, NULL, |
| 11866 | text, false); |
| 11867 | if (result != ISC_R_SUCCESS) |
| 11868 | return (result); |
| 11869 | |
| 11870 | if (zone == NULL) { |
| 11871 | result = isc_task_beginexclusive(server->task); |
| 11872 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11873 | tresult = ISC_R_SUCCESS; |
| 11874 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11875 | view != NULL; |
| 11876 | view = ISC_LIST_NEXT(view, link)) { |
| 11877 | result = dns_zt_apply(view->zonetable, false, |
| 11878 | NULL, synczone, &cleanup); |
| 11879 | if (result != ISC_R_SUCCESS && |
| 11880 | tresult == ISC_R_SUCCESS) |
| 11881 | tresult = result; |
| 11882 | } |
| 11883 | isc_task_endexclusive(server->task); |
| 11884 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11885 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11886 | "dumping all zones%s: %s" , |
| 11887 | cleanup ? ", removing journal files" : "" , |
| 11888 | isc_result_totext(result)); |
| 11889 | return (tresult); |
| 11890 | } |
| 11891 | |
| 11892 | result = isc_task_beginexclusive(server->task); |
| 11893 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11894 | result = synczone(zone, &cleanup); |
| 11895 | isc_task_endexclusive(server->task); |
| 11896 | |
| 11897 | view = dns_zone_getview(zone); |
| 11898 | if (strcmp(view->name, "_default" ) == 0 || |
| 11899 | strcmp(view->name, "_bind" ) == 0) |
| 11900 | { |
| 11901 | vname = "" ; |
| 11902 | sep = "" ; |
| 11903 | } else { |
| 11904 | vname = view->name; |
| 11905 | sep = " " ; |
| 11906 | } |
| 11907 | dns_rdataclass_format(dns_zone_getclass(zone), classstr, |
| 11908 | sizeof(classstr)); |
| 11909 | dns_name_format(dns_zone_getorigin(zone), |
| 11910 | zonename, sizeof(zonename)); |
| 11911 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11912 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11913 | "sync: dumping zone '%s/%s'%s%s%s: %s" , |
| 11914 | zonename, classstr, sep, vname, |
| 11915 | cleanup ? ", removing journal file" : "" , |
| 11916 | isc_result_totext(result)); |
| 11917 | dns_zone_detach(&zone); |
| 11918 | return (result); |
| 11919 | } |
| 11920 | |
| 11921 | /* |
| 11922 | * Act on a "freeze" or "thaw" command from the command channel. |
| 11923 | */ |
| 11924 | isc_result_t |
| 11925 | named_server_freeze(named_server_t *server, bool freeze, |
| 11926 | isc_lex_t *lex, isc_buffer_t **text) |
| 11927 | { |
| 11928 | isc_result_t result, tresult; |
| 11929 | dns_zone_t *mayberaw = NULL, *raw = NULL; |
| 11930 | dns_zonetype_t type; |
| 11931 | char classstr[DNS_RDATACLASS_FORMATSIZE]; |
| 11932 | char zonename[DNS_NAME_FORMATSIZE]; |
| 11933 | dns_view_t *view; |
| 11934 | const char *vname, *sep; |
| 11935 | bool frozen; |
| 11936 | const char *msg = NULL; |
| 11937 | |
| 11938 | result = zone_from_args(server, lex, NULL, &mayberaw, NULL, |
| 11939 | text, true); |
| 11940 | if (result != ISC_R_SUCCESS) |
| 11941 | return (result); |
| 11942 | if (mayberaw == NULL) { |
| 11943 | result = isc_task_beginexclusive(server->task); |
| 11944 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11945 | tresult = ISC_R_SUCCESS; |
| 11946 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 11947 | view != NULL; |
| 11948 | view = ISC_LIST_NEXT(view, link)) { |
| 11949 | result = dns_view_freezezones(view, freeze); |
| 11950 | if (result != ISC_R_SUCCESS && |
| 11951 | tresult == ISC_R_SUCCESS) |
| 11952 | tresult = result; |
| 11953 | } |
| 11954 | isc_task_endexclusive(server->task); |
| 11955 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 11956 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 11957 | "%s all zones: %s" , |
| 11958 | freeze ? "freezing" : "thawing" , |
| 11959 | isc_result_totext(tresult)); |
| 11960 | return (tresult); |
| 11961 | } |
| 11962 | dns_zone_getraw(mayberaw, &raw); |
| 11963 | if (raw != NULL) { |
| 11964 | dns_zone_detach(&mayberaw); |
| 11965 | dns_zone_attach(raw, &mayberaw); |
| 11966 | dns_zone_detach(&raw); |
| 11967 | } |
| 11968 | type = dns_zone_gettype(mayberaw); |
| 11969 | if (type != dns_zone_master) { |
| 11970 | dns_zone_detach(&mayberaw); |
| 11971 | return (DNS_R_NOTMASTER); |
| 11972 | } |
| 11973 | |
| 11974 | if (freeze && !dns_zone_isdynamic(mayberaw, true)) { |
| 11975 | dns_zone_detach(&mayberaw); |
| 11976 | return (DNS_R_NOTDYNAMIC); |
| 11977 | } |
| 11978 | |
| 11979 | result = isc_task_beginexclusive(server->task); |
| 11980 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 11981 | frozen = dns_zone_getupdatedisabled(mayberaw); |
| 11982 | if (freeze) { |
| 11983 | if (frozen) { |
| 11984 | msg = "WARNING: The zone was already frozen.\n" |
| 11985 | "Someone else may be editing it or " |
| 11986 | "it may still be re-loading." ; |
| 11987 | result = DNS_R_FROZEN; |
| 11988 | } |
| 11989 | if (result == ISC_R_SUCCESS) { |
| 11990 | result = dns_zone_flush(mayberaw); |
| 11991 | if (result != ISC_R_SUCCESS) |
| 11992 | msg = "Flushing the zone updates to " |
| 11993 | "disk failed." ; |
| 11994 | } |
| 11995 | if (result == ISC_R_SUCCESS) |
| 11996 | dns_zone_setupdatedisabled(mayberaw, freeze); |
| 11997 | } else { |
| 11998 | if (frozen) { |
| 11999 | result = dns_zone_loadandthaw(mayberaw); |
| 12000 | switch (result) { |
| 12001 | case ISC_R_SUCCESS: |
| 12002 | case DNS_R_UPTODATE: |
| 12003 | msg = "The zone reload and thaw was " |
| 12004 | "successful." ; |
| 12005 | result = ISC_R_SUCCESS; |
| 12006 | break; |
| 12007 | case DNS_R_CONTINUE: |
| 12008 | msg = "A zone reload and thaw was started.\n" |
| 12009 | "Check the logs to see the result." ; |
| 12010 | result = ISC_R_SUCCESS; |
| 12011 | break; |
| 12012 | } |
| 12013 | } |
| 12014 | } |
| 12015 | isc_task_endexclusive(server->task); |
| 12016 | |
| 12017 | if (msg != NULL) { |
| 12018 | (void) putstr(text, msg); |
| 12019 | (void) putnull(text); |
| 12020 | } |
| 12021 | |
| 12022 | view = dns_zone_getview(mayberaw); |
| 12023 | if (strcmp(view->name, "_default" ) == 0 || |
| 12024 | strcmp(view->name, "_bind" ) == 0) |
| 12025 | { |
| 12026 | vname = "" ; |
| 12027 | sep = "" ; |
| 12028 | } else { |
| 12029 | vname = view->name; |
| 12030 | sep = " " ; |
| 12031 | } |
| 12032 | dns_rdataclass_format(dns_zone_getclass(mayberaw), classstr, |
| 12033 | sizeof(classstr)); |
| 12034 | dns_name_format(dns_zone_getorigin(mayberaw), |
| 12035 | zonename, sizeof(zonename)); |
| 12036 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 12037 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 12038 | "%s zone '%s/%s'%s%s: %s" , |
| 12039 | freeze ? "freezing" : "thawing" , |
| 12040 | zonename, classstr, sep, vname, |
| 12041 | isc_result_totext(result)); |
| 12042 | dns_zone_detach(&mayberaw); |
| 12043 | return (result); |
| 12044 | } |
| 12045 | |
| 12046 | #ifdef HAVE_LIBSCF |
| 12047 | /* |
| 12048 | * This function adds a message for rndc to echo if named |
| 12049 | * is managed by smf and is also running chroot. |
| 12050 | */ |
| 12051 | isc_result_t |
| 12052 | named_smf_add_message(isc_buffer_t **text) { |
| 12053 | return (putstr(text, "use svcadm(1M) to manage named" )); |
| 12054 | } |
| 12055 | #endif /* HAVE_LIBSCF */ |
| 12056 | |
| 12057 | #ifndef HAVE_LMDB |
| 12058 | |
| 12059 | /* |
| 12060 | * Emit a comment at the top of the nzf file containing the viewname |
| 12061 | * Expects the fp to already be open for writing |
| 12062 | */ |
| 12063 | #define "# New zone file for view: " |
| 12064 | #define "\n# This file contains configuration for zones added by\n" \ |
| 12065 | "# the 'rndc addzone' command. DO NOT EDIT BY HAND.\n" |
| 12066 | static isc_result_t |
| 12067 | (FILE *fp, const char *viewname) { |
| 12068 | isc_result_t result; |
| 12069 | CHECK(isc_stdio_write(HEADER1, sizeof(HEADER1) - 1, 1, fp, NULL)); |
| 12070 | CHECK(isc_stdio_write(viewname, strlen(viewname), 1, fp, NULL)); |
| 12071 | CHECK(isc_stdio_write(HEADER2, sizeof(HEADER2) - 1, 1, fp, NULL)); |
| 12072 | cleanup: |
| 12073 | return (result); |
| 12074 | } |
| 12075 | |
| 12076 | static void |
| 12077 | dumpzone(void *arg, const char *buf, int len) { |
| 12078 | FILE *fp = arg; |
| 12079 | |
| 12080 | (void) isc_stdio_write(buf, len, 1, fp, NULL); |
| 12081 | } |
| 12082 | |
| 12083 | static isc_result_t |
| 12084 | nzf_append(dns_view_t *view, const cfg_obj_t *zconfig) { |
| 12085 | isc_result_t result; |
| 12086 | off_t offset; |
| 12087 | FILE *fp = NULL; |
| 12088 | bool offsetok = false; |
| 12089 | |
| 12090 | LOCK(&view->new_zone_lock); |
| 12091 | |
| 12092 | CHECK(isc_stdio_open(view->new_zone_file, "a" , &fp)); |
| 12093 | CHECK(isc_stdio_seek(fp, 0, SEEK_END)); |
| 12094 | |
| 12095 | CHECK(isc_stdio_tell(fp, &offset)); |
| 12096 | offsetok = true; |
| 12097 | if (offset == 0) |
| 12098 | CHECK(add_comment(fp, view->name)); |
| 12099 | |
| 12100 | CHECK(isc_stdio_write("zone " , 5, 1, fp, NULL)); |
| 12101 | cfg_printx(zconfig, CFG_PRINTER_ONELINE, dumpzone, fp); |
| 12102 | CHECK(isc_stdio_write(";\n" , 2, 1, fp, NULL)); |
| 12103 | CHECK(isc_stdio_flush(fp)); |
| 12104 | result = isc_stdio_close(fp); |
| 12105 | fp = NULL; |
| 12106 | |
| 12107 | cleanup: |
| 12108 | if (fp != NULL) { |
| 12109 | (void)isc_stdio_close(fp); |
| 12110 | if (offsetok) { |
| 12111 | isc_result_t result2; |
| 12112 | |
| 12113 | result2 = isc_file_truncate(view->new_zone_file, |
| 12114 | offset); |
| 12115 | if (result2 != ISC_R_SUCCESS) { |
| 12116 | isc_log_write(named_g_lctx, |
| 12117 | NAMED_LOGCATEGORY_GENERAL, |
| 12118 | NAMED_LOGMODULE_SERVER, |
| 12119 | ISC_LOG_ERROR, |
| 12120 | "Error truncating NZF file '%s' " |
| 12121 | "during rollback from append: " |
| 12122 | "%s" , |
| 12123 | view->new_zone_file, |
| 12124 | isc_result_totext(result2)); |
| 12125 | } |
| 12126 | } |
| 12127 | } |
| 12128 | UNLOCK(&view->new_zone_lock); |
| 12129 | return (result); |
| 12130 | } |
| 12131 | |
| 12132 | static isc_result_t |
| 12133 | nzf_writeconf(const cfg_obj_t *config, dns_view_t *view) { |
| 12134 | const cfg_obj_t *zl = NULL; |
| 12135 | cfg_list_t *list; |
| 12136 | const cfg_listelt_t *elt; |
| 12137 | |
| 12138 | FILE *fp = NULL; |
| 12139 | char tmp[1024]; |
| 12140 | isc_result_t result; |
| 12141 | |
| 12142 | result = isc_file_template(view->new_zone_file, "nzf-XXXXXXXX" , |
| 12143 | tmp, sizeof(tmp)); |
| 12144 | if (result == ISC_R_SUCCESS) |
| 12145 | result = isc_file_openunique(tmp, &fp); |
| 12146 | if (result != ISC_R_SUCCESS) |
| 12147 | return (result); |
| 12148 | |
| 12149 | cfg_map_get(config, "zone" , &zl); |
| 12150 | if (!cfg_obj_islist(zl)) |
| 12151 | CHECK(ISC_R_FAILURE); |
| 12152 | |
| 12153 | DE_CONST(&zl->value.list, list); |
| 12154 | |
| 12155 | CHECK(add_comment(fp, view->name)); /* force a comment */ |
| 12156 | |
| 12157 | for (elt = ISC_LIST_HEAD(*list); |
| 12158 | elt != NULL; |
| 12159 | elt = ISC_LIST_NEXT(elt, link)) |
| 12160 | { |
| 12161 | const cfg_obj_t *zconfig = cfg_listelt_value(elt); |
| 12162 | |
| 12163 | CHECK(isc_stdio_write("zone " , 5, 1, fp, NULL)); |
| 12164 | cfg_printx(zconfig, CFG_PRINTER_ONELINE, dumpzone, fp); |
| 12165 | CHECK(isc_stdio_write(";\n" , 2, 1, fp, NULL)); |
| 12166 | } |
| 12167 | |
| 12168 | CHECK(isc_stdio_flush(fp)); |
| 12169 | result = isc_stdio_close(fp); |
| 12170 | fp = NULL; |
| 12171 | if (result != ISC_R_SUCCESS) |
| 12172 | goto cleanup; |
| 12173 | CHECK(isc_file_rename(tmp, view->new_zone_file)); |
| 12174 | return (result); |
| 12175 | |
| 12176 | cleanup: |
| 12177 | if (fp != NULL) |
| 12178 | (void)isc_stdio_close(fp); |
| 12179 | (void)isc_file_remove(tmp); |
| 12180 | return (result); |
| 12181 | } |
| 12182 | |
| 12183 | #else /* HAVE_LMDB */ |
| 12184 | |
| 12185 | static void |
| 12186 | nzd_setkey(MDB_val *key, dns_name_t *name, char *namebuf, size_t buflen) { |
| 12187 | dns_fixedname_t fixed; |
| 12188 | |
| 12189 | dns_fixedname_init(&fixed); |
| 12190 | dns_name_downcase(name, dns_fixedname_name(&fixed), NULL); |
| 12191 | dns_name_format(dns_fixedname_name(&fixed), namebuf, buflen); |
| 12192 | |
| 12193 | key->mv_data = namebuf; |
| 12194 | key->mv_size = strlen(namebuf); |
| 12195 | } |
| 12196 | |
| 12197 | static void |
| 12198 | dumpzone(void *arg, const char *buf, int len) { |
| 12199 | ns_dzarg_t *dzarg = arg; |
| 12200 | isc_result_t result; |
| 12201 | |
| 12202 | REQUIRE(dzarg != NULL && ISC_MAGIC_VALID(dzarg, DZARG_MAGIC)); |
| 12203 | |
| 12204 | result = putmem(dzarg->text, buf, len); |
| 12205 | if (result != ISC_R_SUCCESS && dzarg->result == ISC_R_SUCCESS) { |
| 12206 | dzarg->result = result; |
| 12207 | } |
| 12208 | } |
| 12209 | |
| 12210 | static isc_result_t |
| 12211 | nzd_save(MDB_txn **txnp, MDB_dbi dbi, dns_zone_t *zone, |
| 12212 | const cfg_obj_t *zconfig) |
| 12213 | { |
| 12214 | isc_result_t result; |
| 12215 | int status; |
| 12216 | dns_view_t *view; |
| 12217 | bool commit = false; |
| 12218 | isc_buffer_t *text = NULL; |
| 12219 | char namebuf[1024]; |
| 12220 | MDB_val key, data; |
| 12221 | ns_dzarg_t dzarg; |
| 12222 | |
| 12223 | view = dns_zone_getview(zone); |
| 12224 | |
| 12225 | nzd_setkey(&key, dns_zone_getorigin(zone), namebuf, sizeof(namebuf)); |
| 12226 | |
| 12227 | LOCK(&view->new_zone_lock); |
| 12228 | |
| 12229 | if (zconfig == NULL) { |
| 12230 | /* We're deleting the zone from the database */ |
| 12231 | status = mdb_del(*txnp, dbi, &key, NULL); |
| 12232 | if (status != MDB_SUCCESS && status != MDB_NOTFOUND) { |
| 12233 | isc_log_write(named_g_lctx, |
| 12234 | NAMED_LOGCATEGORY_GENERAL, |
| 12235 | NAMED_LOGMODULE_SERVER, |
| 12236 | ISC_LOG_ERROR, |
| 12237 | "Error deleting zone %s " |
| 12238 | "from NZD database: %s" , |
| 12239 | namebuf, mdb_strerror(status)); |
| 12240 | result = ISC_R_FAILURE; |
| 12241 | goto cleanup; |
| 12242 | } else if (status != MDB_NOTFOUND) { |
| 12243 | commit = true; |
| 12244 | } |
| 12245 | } else { |
| 12246 | /* We're creating or overwriting the zone */ |
| 12247 | const cfg_obj_t *zoptions; |
| 12248 | |
| 12249 | result = isc_buffer_allocate(view->mctx, &text, 256); |
| 12250 | if (result != ISC_R_SUCCESS) { |
| 12251 | isc_log_write(named_g_lctx, |
| 12252 | NAMED_LOGCATEGORY_GENERAL, |
| 12253 | NAMED_LOGMODULE_SERVER, |
| 12254 | ISC_LOG_ERROR, |
| 12255 | "Unable to allocate buffer in " |
| 12256 | "nzd_save(): %s" , |
| 12257 | isc_result_totext(result)); |
| 12258 | goto cleanup; |
| 12259 | } |
| 12260 | |
| 12261 | zoptions = cfg_tuple_get(zconfig, "options" ); |
| 12262 | if (zoptions == NULL) { |
| 12263 | isc_log_write(named_g_lctx, |
| 12264 | NAMED_LOGCATEGORY_GENERAL, |
| 12265 | NAMED_LOGMODULE_SERVER, |
| 12266 | ISC_LOG_ERROR, |
| 12267 | "Unable to get options from config in " |
| 12268 | "nzd_save()" ); |
| 12269 | result = ISC_R_FAILURE; |
| 12270 | goto cleanup; |
| 12271 | } |
| 12272 | |
| 12273 | dzarg.magic = DZARG_MAGIC; |
| 12274 | dzarg.text = &text; |
| 12275 | dzarg.result = ISC_R_SUCCESS; |
| 12276 | cfg_printx(zoptions, CFG_PRINTER_ONELINE, dumpzone, &dzarg); |
| 12277 | if (dzarg.result != ISC_R_SUCCESS) { |
| 12278 | isc_log_write(named_g_lctx, |
| 12279 | NAMED_LOGCATEGORY_GENERAL, |
| 12280 | NAMED_LOGMODULE_SERVER, |
| 12281 | ISC_LOG_ERROR, |
| 12282 | "Error writing zone config to " |
| 12283 | "buffer in nzd_save(): %s" , |
| 12284 | isc_result_totext(result)); |
| 12285 | result = dzarg.result; |
| 12286 | goto cleanup; |
| 12287 | } |
| 12288 | |
| 12289 | data.mv_data = isc_buffer_base(text); |
| 12290 | data.mv_size = isc_buffer_usedlength(text); |
| 12291 | |
| 12292 | status = mdb_put(*txnp, dbi, &key, &data, 0); |
| 12293 | if (status != MDB_SUCCESS) { |
| 12294 | isc_log_write(named_g_lctx, |
| 12295 | NAMED_LOGCATEGORY_GENERAL, |
| 12296 | NAMED_LOGMODULE_SERVER, |
| 12297 | ISC_LOG_ERROR, |
| 12298 | "Error inserting zone in " |
| 12299 | "NZD database: %s" , |
| 12300 | mdb_strerror(status)); |
| 12301 | result = ISC_R_FAILURE; |
| 12302 | goto cleanup; |
| 12303 | } |
| 12304 | |
| 12305 | commit = true; |
| 12306 | } |
| 12307 | |
| 12308 | result = ISC_R_SUCCESS; |
| 12309 | |
| 12310 | cleanup: |
| 12311 | if (!commit || result != ISC_R_SUCCESS) { |
| 12312 | (void) mdb_txn_abort(*txnp); |
| 12313 | } else { |
| 12314 | status = mdb_txn_commit(*txnp); |
| 12315 | if (status != MDB_SUCCESS) { |
| 12316 | isc_log_write(named_g_lctx, |
| 12317 | NAMED_LOGCATEGORY_GENERAL, |
| 12318 | NAMED_LOGMODULE_SERVER, |
| 12319 | ISC_LOG_ERROR, |
| 12320 | "Error committing " |
| 12321 | "NZD database: %s" , |
| 12322 | mdb_strerror(status)); |
| 12323 | result = ISC_R_FAILURE; |
| 12324 | } |
| 12325 | } |
| 12326 | *txnp = NULL; |
| 12327 | |
| 12328 | UNLOCK(&view->new_zone_lock); |
| 12329 | |
| 12330 | if (text != NULL) { |
| 12331 | isc_buffer_free(&text); |
| 12332 | } |
| 12333 | |
| 12334 | return (result); |
| 12335 | } |
| 12336 | |
| 12337 | static isc_result_t |
| 12338 | nzd_writable(dns_view_t *view) { |
| 12339 | isc_result_t result = ISC_R_SUCCESS; |
| 12340 | int status; |
| 12341 | MDB_dbi dbi; |
| 12342 | MDB_txn *txn = NULL; |
| 12343 | |
| 12344 | REQUIRE(view != NULL); |
| 12345 | |
| 12346 | status = mdb_txn_begin((MDB_env *) view->new_zone_dbenv, 0, 0, &txn); |
| 12347 | if (status != MDB_SUCCESS) { |
| 12348 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 12349 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 12350 | "mdb_txn_begin: %s" , |
| 12351 | mdb_strerror(status)); |
| 12352 | return (ISC_R_FAILURE); |
| 12353 | } |
| 12354 | |
| 12355 | status = mdb_dbi_open(txn, NULL, 0, &dbi); |
| 12356 | if (status != MDB_SUCCESS) { |
| 12357 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 12358 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 12359 | "mdb_dbi_open: %s" , |
| 12360 | mdb_strerror(status)); |
| 12361 | result = ISC_R_FAILURE; |
| 12362 | } |
| 12363 | |
| 12364 | mdb_txn_abort(txn); |
| 12365 | return (result); |
| 12366 | } |
| 12367 | |
| 12368 | static isc_result_t |
| 12369 | nzd_open(dns_view_t *view, unsigned int flags, MDB_txn **txnp, MDB_dbi *dbi) { |
| 12370 | int status; |
| 12371 | MDB_txn *txn = NULL; |
| 12372 | |
| 12373 | REQUIRE(view != NULL); |
| 12374 | REQUIRE(txnp != NULL && *txnp == NULL); |
| 12375 | REQUIRE(dbi != NULL); |
| 12376 | |
| 12377 | status = mdb_txn_begin((MDB_env *) view->new_zone_dbenv, 0, |
| 12378 | flags, &txn); |
| 12379 | if (status != MDB_SUCCESS) { |
| 12380 | isc_log_write(named_g_lctx, |
| 12381 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 12382 | ISC_LOG_WARNING, "mdb_txn_begin: %s" , |
| 12383 | mdb_strerror(status)); |
| 12384 | goto cleanup; |
| 12385 | } |
| 12386 | |
| 12387 | status = mdb_dbi_open(txn, NULL, 0, dbi); |
| 12388 | if (status != MDB_SUCCESS) { |
| 12389 | isc_log_write(named_g_lctx, |
| 12390 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 12391 | ISC_LOG_WARNING, "mdb_dbi_open: %s" , |
| 12392 | mdb_strerror(status)); |
| 12393 | goto cleanup; |
| 12394 | } |
| 12395 | |
| 12396 | *txnp = txn; |
| 12397 | |
| 12398 | cleanup: |
| 12399 | if (status != MDB_SUCCESS) { |
| 12400 | if (txn != NULL) { |
| 12401 | mdb_txn_abort(txn); |
| 12402 | } |
| 12403 | return (ISC_R_FAILURE); |
| 12404 | } |
| 12405 | |
| 12406 | return (ISC_R_SUCCESS); |
| 12407 | } |
| 12408 | |
| 12409 | /* |
| 12410 | * nzd_env_close() and nzd_env_reopen are a kluge to address the |
| 12411 | * problem of an NZD file possibly being created before we drop |
| 12412 | * root privileges. |
| 12413 | */ |
| 12414 | static void |
| 12415 | nzd_env_close(dns_view_t *view) { |
| 12416 | const char *dbpath = NULL; |
| 12417 | char dbpath_copy[PATH_MAX]; |
| 12418 | char lockpath[PATH_MAX]; |
| 12419 | int status, ret; |
| 12420 | |
| 12421 | if (view->new_zone_dbenv == NULL) { |
| 12422 | return; |
| 12423 | } |
| 12424 | |
| 12425 | status = mdb_env_get_path(view->new_zone_dbenv, &dbpath); |
| 12426 | INSIST(status == MDB_SUCCESS); |
| 12427 | snprintf(lockpath, sizeof(lockpath), "%s-lock" , dbpath); |
| 12428 | strlcpy(dbpath_copy, dbpath, sizeof(dbpath_copy)); |
| 12429 | mdb_env_close((MDB_env *) view->new_zone_dbenv); |
| 12430 | |
| 12431 | /* |
| 12432 | * Database files must be owned by the eventual user, not by root. |
| 12433 | */ |
| 12434 | ret = chown(dbpath_copy, ns_os_uid(), -1); |
| 12435 | UNUSED(ret); |
| 12436 | |
| 12437 | /* |
| 12438 | * Some platforms need the lockfile not to exist when we reopen the |
| 12439 | * environment. |
| 12440 | */ |
| 12441 | (void) isc_file_remove(lockpath); |
| 12442 | |
| 12443 | view->new_zone_dbenv = NULL; |
| 12444 | } |
| 12445 | |
| 12446 | static isc_result_t |
| 12447 | nzd_env_reopen(dns_view_t *view) { |
| 12448 | isc_result_t result; |
| 12449 | MDB_env *env = NULL; |
| 12450 | int status; |
| 12451 | |
| 12452 | if (view->new_zone_db == NULL) { |
| 12453 | return (ISC_R_SUCCESS); |
| 12454 | } |
| 12455 | |
| 12456 | nzd_env_close(view); |
| 12457 | |
| 12458 | status = mdb_env_create(&env); |
| 12459 | if (status != MDB_SUCCESS) { |
| 12460 | isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL, |
| 12461 | ISC_LOGMODULE_OTHER, ISC_LOG_ERROR, |
| 12462 | "mdb_env_create failed: %s" , |
| 12463 | mdb_strerror(status)); |
| 12464 | CHECK(ISC_R_FAILURE); |
| 12465 | } |
| 12466 | |
| 12467 | if (view->new_zone_mapsize != 0ULL) { |
| 12468 | status = mdb_env_set_mapsize(env, view->new_zone_mapsize); |
| 12469 | if (status != MDB_SUCCESS) { |
| 12470 | isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL, |
| 12471 | ISC_LOGMODULE_OTHER, ISC_LOG_ERROR, |
| 12472 | "mdb_env_set_mapsize failed: %s" , |
| 12473 | mdb_strerror(status)); |
| 12474 | CHECK(ISC_R_FAILURE); |
| 12475 | } |
| 12476 | } |
| 12477 | |
| 12478 | status = mdb_env_open(env, view->new_zone_db, DNS_LMDB_FLAGS, 0600); |
| 12479 | if (status != MDB_SUCCESS) { |
| 12480 | isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL, |
| 12481 | ISC_LOGMODULE_OTHER, ISC_LOG_ERROR, |
| 12482 | "mdb_env_open of '%s' failed: %s" , |
| 12483 | view->new_zone_db, mdb_strerror(status)); |
| 12484 | CHECK(ISC_R_FAILURE); |
| 12485 | } |
| 12486 | |
| 12487 | view->new_zone_dbenv = env; |
| 12488 | env = NULL; |
| 12489 | result = ISC_R_SUCCESS; |
| 12490 | |
| 12491 | cleanup: |
| 12492 | if (env != NULL) { |
| 12493 | mdb_env_close(env); |
| 12494 | } |
| 12495 | return (result); |
| 12496 | } |
| 12497 | |
| 12498 | static isc_result_t |
| 12499 | nzd_close(MDB_txn **txnp, bool commit) { |
| 12500 | isc_result_t result = ISC_R_SUCCESS; |
| 12501 | int status; |
| 12502 | |
| 12503 | REQUIRE(txnp != NULL); |
| 12504 | |
| 12505 | if (*txnp != NULL) { |
| 12506 | if (commit) { |
| 12507 | status = mdb_txn_commit(*txnp); |
| 12508 | if (status != MDB_SUCCESS) { |
| 12509 | result = ISC_R_FAILURE; |
| 12510 | } |
| 12511 | } else { |
| 12512 | mdb_txn_abort(*txnp); |
| 12513 | } |
| 12514 | *txnp = NULL; |
| 12515 | } |
| 12516 | |
| 12517 | return (result); |
| 12518 | } |
| 12519 | |
| 12520 | static isc_result_t |
| 12521 | nzd_count(dns_view_t *view, int *countp) { |
| 12522 | isc_result_t result; |
| 12523 | int status; |
| 12524 | MDB_txn *txn = NULL; |
| 12525 | MDB_dbi dbi; |
| 12526 | MDB_stat statbuf; |
| 12527 | |
| 12528 | REQUIRE(countp != NULL); |
| 12529 | |
| 12530 | result = nzd_open(view, MDB_RDONLY, &txn, &dbi); |
| 12531 | if (result != ISC_R_SUCCESS) { |
| 12532 | goto cleanup; |
| 12533 | } |
| 12534 | |
| 12535 | status = mdb_stat(txn, dbi, &statbuf); |
| 12536 | if (status != MDB_SUCCESS) { |
| 12537 | isc_log_write(named_g_lctx, |
| 12538 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 12539 | ISC_LOG_WARNING, "mdb_stat: %s" , |
| 12540 | mdb_strerror(status)); |
| 12541 | result = ISC_R_FAILURE; |
| 12542 | goto cleanup; |
| 12543 | } |
| 12544 | |
| 12545 | *countp = statbuf.ms_entries; |
| 12546 | |
| 12547 | cleanup: |
| 12548 | (void) nzd_close(&txn, false); |
| 12549 | |
| 12550 | return (result); |
| 12551 | } |
| 12552 | |
| 12553 | static isc_result_t |
| 12554 | migrate_nzf(dns_view_t *view) { |
| 12555 | isc_result_t result; |
| 12556 | cfg_obj_t *nzf_config = NULL; |
| 12557 | int status, n; |
| 12558 | isc_buffer_t *text = NULL; |
| 12559 | bool commit = false; |
| 12560 | const cfg_obj_t *zonelist; |
| 12561 | const cfg_listelt_t *element; |
| 12562 | char tempname[PATH_MAX]; |
| 12563 | MDB_txn *txn = NULL; |
| 12564 | MDB_dbi dbi; |
| 12565 | MDB_val key, data; |
| 12566 | ns_dzarg_t dzarg; |
| 12567 | |
| 12568 | /* |
| 12569 | * If NZF file doesn't exist, or NZD DB exists and already |
| 12570 | * has data, return without attempting migration. |
| 12571 | */ |
| 12572 | if (!isc_file_exists(view->new_zone_file)) { |
| 12573 | result = ISC_R_SUCCESS; |
| 12574 | goto cleanup; |
| 12575 | } |
| 12576 | |
| 12577 | result = nzd_count(view, &n); |
| 12578 | if (result == ISC_R_SUCCESS && n > 0) { |
| 12579 | result = ISC_R_SUCCESS; |
| 12580 | goto cleanup; |
| 12581 | } |
| 12582 | |
| 12583 | isc_log_write(named_g_lctx, |
| 12584 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 12585 | ISC_LOG_INFO, |
| 12586 | "Migrating zones from NZF file '%s' to " |
| 12587 | "NZD database '%s'" , |
| 12588 | view->new_zone_file, view->new_zone_db); |
| 12589 | /* |
| 12590 | * Instead of blindly copying lines, we parse the NZF file using |
| 12591 | * the configuration parser, because it validates it against the |
| 12592 | * config type, giving us a guarantee that valid configuration |
| 12593 | * will be written to DB. |
| 12594 | */ |
| 12595 | cfg_parser_reset(named_g_addparser); |
| 12596 | result = cfg_parse_file(named_g_addparser, view->new_zone_file, |
| 12597 | &cfg_type_addzoneconf, &nzf_config); |
| 12598 | if (result != ISC_R_SUCCESS) { |
| 12599 | isc_log_write(named_g_lctx, |
| 12600 | NAMED_LOGCATEGORY_GENERAL, NAMED_LOGMODULE_SERVER, |
| 12601 | ISC_LOG_ERROR, |
| 12602 | "Error parsing NZF file '%s': %s" , |
| 12603 | view->new_zone_file, |
| 12604 | isc_result_totext(result)); |
| 12605 | goto cleanup; |
| 12606 | } |
| 12607 | |
| 12608 | zonelist = NULL; |
| 12609 | CHECK(cfg_map_get(nzf_config, "zone" , &zonelist)); |
| 12610 | if (!cfg_obj_islist(zonelist)) { |
| 12611 | CHECK(ISC_R_FAILURE); |
| 12612 | } |
| 12613 | |
| 12614 | CHECK(nzd_open(view, 0, &txn, &dbi)); |
| 12615 | |
| 12616 | CHECK(isc_buffer_allocate(view->mctx, &text, 256)); |
| 12617 | |
| 12618 | for (element = cfg_list_first(zonelist); |
| 12619 | element != NULL; |
| 12620 | element = cfg_list_next(element)) |
| 12621 | { |
| 12622 | const cfg_obj_t *zconfig; |
| 12623 | const cfg_obj_t *zoptions; |
| 12624 | char zname[DNS_NAME_FORMATSIZE]; |
| 12625 | dns_fixedname_t fname; |
| 12626 | dns_name_t *name; |
| 12627 | const char *origin; |
| 12628 | isc_buffer_t b; |
| 12629 | |
| 12630 | zconfig = cfg_listelt_value(element); |
| 12631 | |
| 12632 | origin = cfg_obj_asstring(cfg_tuple_get(zconfig, "name" )); |
| 12633 | if (origin == NULL) { |
| 12634 | result = ISC_R_FAILURE; |
| 12635 | goto cleanup; |
| 12636 | } |
| 12637 | |
| 12638 | /* Normalize zone name */ |
| 12639 | isc_buffer_constinit(&b, origin, strlen(origin)); |
| 12640 | isc_buffer_add(&b, strlen(origin)); |
| 12641 | name = dns_fixedname_initname(&fname); |
| 12642 | CHECK(dns_name_fromtext(name, &b, dns_rootname, |
| 12643 | DNS_NAME_DOWNCASE, NULL)); |
| 12644 | dns_name_format(name, zname, sizeof(zname)); |
| 12645 | |
| 12646 | key.mv_data = zname; |
| 12647 | key.mv_size = strlen(zname); |
| 12648 | |
| 12649 | zoptions = cfg_tuple_get(zconfig, "options" ); |
| 12650 | if (zoptions == NULL) { |
| 12651 | result = ISC_R_FAILURE; |
| 12652 | goto cleanup; |
| 12653 | } |
| 12654 | |
| 12655 | isc_buffer_clear(text); |
| 12656 | dzarg.magic = DZARG_MAGIC; |
| 12657 | dzarg.text = &text; |
| 12658 | dzarg.result = ISC_R_SUCCESS; |
| 12659 | cfg_printx(zoptions, CFG_PRINTER_ONELINE, dumpzone, &dzarg); |
| 12660 | if (dzarg.result != ISC_R_SUCCESS) { |
| 12661 | isc_log_write(named_g_lctx, |
| 12662 | NAMED_LOGCATEGORY_GENERAL, |
| 12663 | NAMED_LOGMODULE_SERVER, |
| 12664 | ISC_LOG_ERROR, |
| 12665 | "Error writing zone config to " |
| 12666 | "buffer in migrate_nzf(): %s" , |
| 12667 | isc_result_totext(result)); |
| 12668 | result = dzarg.result; |
| 12669 | goto cleanup; |
| 12670 | } |
| 12671 | |
| 12672 | data.mv_data = isc_buffer_base(text); |
| 12673 | data.mv_size = isc_buffer_usedlength(text); |
| 12674 | |
| 12675 | status = mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE); |
| 12676 | if (status != MDB_SUCCESS) { |
| 12677 | isc_log_write(named_g_lctx, |
| 12678 | NAMED_LOGCATEGORY_GENERAL, |
| 12679 | NAMED_LOGMODULE_SERVER, |
| 12680 | ISC_LOG_ERROR, |
| 12681 | "Error inserting zone in " |
| 12682 | "NZD database: %s" , |
| 12683 | mdb_strerror(status)); |
| 12684 | result = ISC_R_FAILURE; |
| 12685 | goto cleanup; |
| 12686 | } |
| 12687 | |
| 12688 | commit = true; |
| 12689 | } |
| 12690 | |
| 12691 | result = ISC_R_SUCCESS; |
| 12692 | |
| 12693 | /* |
| 12694 | * Leaving the NZF file in place is harmless as we won't use it |
| 12695 | * if an NZD database is found for the view. But we rename NZF file |
| 12696 | * to a backup name here. |
| 12697 | */ |
| 12698 | strlcpy(tempname, view->new_zone_file, sizeof(tempname)); |
| 12699 | if (strlen(tempname) < sizeof(tempname) - 1) { |
| 12700 | strlcat(tempname, "~" , sizeof(tempname)); |
| 12701 | isc_file_rename(view->new_zone_file, tempname); |
| 12702 | } |
| 12703 | |
| 12704 | cleanup: |
| 12705 | if (result != ISC_R_SUCCESS) { |
| 12706 | (void) nzd_close(&txn, false); |
| 12707 | } else { |
| 12708 | result = nzd_close(&txn, commit); |
| 12709 | } |
| 12710 | |
| 12711 | if (text != NULL) { |
| 12712 | isc_buffer_free(&text); |
| 12713 | } |
| 12714 | |
| 12715 | if (nzf_config != NULL) { |
| 12716 | cfg_obj_destroy(named_g_addparser, &nzf_config); |
| 12717 | } |
| 12718 | |
| 12719 | return (result); |
| 12720 | } |
| 12721 | |
| 12722 | #endif /* HAVE_LMDB */ |
| 12723 | |
| 12724 | static isc_result_t |
| 12725 | newzone_parse(named_server_t *server, char *command, dns_view_t **viewp, |
| 12726 | cfg_obj_t **zoneconfp, const cfg_obj_t **zoneobjp, |
| 12727 | bool *redirectp, isc_buffer_t **text) |
| 12728 | { |
| 12729 | isc_result_t result; |
| 12730 | isc_buffer_t argbuf; |
| 12731 | bool redirect = false; |
| 12732 | cfg_obj_t *zoneconf = NULL; |
| 12733 | const cfg_obj_t *zlist = NULL; |
| 12734 | const cfg_obj_t *zoneobj = NULL; |
| 12735 | const cfg_obj_t *zoptions = NULL; |
| 12736 | const cfg_obj_t *obj = NULL; |
| 12737 | const char *viewname = NULL; |
| 12738 | dns_rdataclass_t rdclass; |
| 12739 | dns_view_t *view = NULL; |
| 12740 | const char *bn = NULL; |
| 12741 | |
| 12742 | REQUIRE(viewp != NULL && *viewp == NULL); |
| 12743 | REQUIRE(zoneobjp != NULL && *zoneobjp == NULL); |
| 12744 | REQUIRE(zoneconfp != NULL && *zoneconfp == NULL); |
| 12745 | REQUIRE(redirectp != NULL); |
| 12746 | |
| 12747 | /* Try to parse the argument string */ |
| 12748 | isc_buffer_init(&argbuf, command, (unsigned int) strlen(command)); |
| 12749 | isc_buffer_add(&argbuf, strlen(command)); |
| 12750 | |
| 12751 | if (strncasecmp(command, "add" , 3) == 0) { |
| 12752 | bn = "addzone" ; |
| 12753 | } else if (strncasecmp(command, "mod" , 3) == 0) { |
| 12754 | bn = "modzone" ; |
| 12755 | } else { |
| 12756 | INSIST(0); |
| 12757 | ISC_UNREACHABLE(); |
| 12758 | } |
| 12759 | |
| 12760 | /* |
| 12761 | * Convert the "addzone" or "modzone" to just "zone", for |
| 12762 | * the benefit of the parser |
| 12763 | */ |
| 12764 | isc_buffer_forward(&argbuf, 3); |
| 12765 | |
| 12766 | cfg_parser_reset(named_g_addparser); |
| 12767 | CHECK(cfg_parse_buffer(named_g_addparser, &argbuf, bn, 0, |
| 12768 | &cfg_type_addzoneconf, 0, &zoneconf)); |
| 12769 | CHECK(cfg_map_get(zoneconf, "zone" , &zlist)); |
| 12770 | if (!cfg_obj_islist(zlist)) |
| 12771 | CHECK(ISC_R_FAILURE); |
| 12772 | |
| 12773 | /* For now we only support adding one zone at a time */ |
| 12774 | zoneobj = cfg_listelt_value(cfg_list_first(zlist)); |
| 12775 | |
| 12776 | /* Check the zone type for ones that are not supported by addzone. */ |
| 12777 | zoptions = cfg_tuple_get(zoneobj, "options" ); |
| 12778 | |
| 12779 | obj = NULL; |
| 12780 | (void)cfg_map_get(zoptions, "type" , &obj); |
| 12781 | if (obj == NULL) { |
| 12782 | (void) cfg_map_get(zoptions, "in-view" , &obj); |
| 12783 | if (obj != NULL) { |
| 12784 | (void) putstr(text, |
| 12785 | "'in-view' zones not supported by " ); |
| 12786 | (void) putstr(text, bn); |
| 12787 | } else |
| 12788 | (void) putstr(text, "zone type not specified" ); |
| 12789 | CHECK(ISC_R_FAILURE); |
| 12790 | } |
| 12791 | |
| 12792 | if (strcasecmp(cfg_obj_asstring(obj), "hint" ) == 0 || |
| 12793 | strcasecmp(cfg_obj_asstring(obj), "forward" ) == 0 || |
| 12794 | strcasecmp(cfg_obj_asstring(obj), "delegation-only" ) == 0) |
| 12795 | { |
| 12796 | (void) putstr(text, "'" ); |
| 12797 | (void) putstr(text, cfg_obj_asstring(obj)); |
| 12798 | (void) putstr(text, "' zones not supported by " ); |
| 12799 | (void) putstr(text, bn); |
| 12800 | CHECK(ISC_R_FAILURE); |
| 12801 | } |
| 12802 | |
| 12803 | if (strcasecmp(cfg_obj_asstring(obj), "redirect" ) == 0) |
| 12804 | redirect = true; |
| 12805 | |
| 12806 | /* Make sense of optional class argument */ |
| 12807 | obj = cfg_tuple_get(zoneobj, "class" ); |
| 12808 | CHECK(named_config_getclass(obj, dns_rdataclass_in, &rdclass)); |
| 12809 | |
| 12810 | /* Make sense of optional view argument */ |
| 12811 | obj = cfg_tuple_get(zoneobj, "view" ); |
| 12812 | if (obj && cfg_obj_isstring(obj)) |
| 12813 | viewname = cfg_obj_asstring(obj); |
| 12814 | if (viewname == NULL || *viewname == '\0') |
| 12815 | viewname = "_default" ; |
| 12816 | result = dns_viewlist_find(&server->viewlist, viewname, rdclass, |
| 12817 | &view); |
| 12818 | if (result == ISC_R_NOTFOUND) { |
| 12819 | (void) putstr(text, "no matching view found for '" ); |
| 12820 | (void) putstr(text, viewname); |
| 12821 | (void) putstr(text, "'" ); |
| 12822 | goto cleanup; |
| 12823 | } else if (result != ISC_R_SUCCESS) { |
| 12824 | goto cleanup; |
| 12825 | } |
| 12826 | |
| 12827 | *viewp = view; |
| 12828 | *zoneobjp = zoneobj; |
| 12829 | *zoneconfp = zoneconf; |
| 12830 | *redirectp = redirect; |
| 12831 | |
| 12832 | return (ISC_R_SUCCESS); |
| 12833 | |
| 12834 | cleanup: |
| 12835 | if (zoneconf != NULL) |
| 12836 | cfg_obj_destroy(named_g_addparser, &zoneconf); |
| 12837 | if (view != NULL) |
| 12838 | dns_view_detach(&view); |
| 12839 | |
| 12840 | return (result); |
| 12841 | } |
| 12842 | |
| 12843 | static isc_result_t |
| 12844 | delete_zoneconf(dns_view_t *view, cfg_parser_t *pctx, |
| 12845 | const cfg_obj_t *config, const dns_name_t *zname, |
| 12846 | nzfwriter_t nzfwriter) |
| 12847 | { |
| 12848 | isc_result_t result = ISC_R_NOTFOUND; |
| 12849 | const cfg_listelt_t *elt = NULL; |
| 12850 | const cfg_obj_t *zl = NULL; |
| 12851 | cfg_list_t *list; |
| 12852 | dns_fixedname_t myfixed; |
| 12853 | dns_name_t *myname; |
| 12854 | |
| 12855 | REQUIRE(view != NULL); |
| 12856 | REQUIRE(pctx != NULL); |
| 12857 | REQUIRE(config != NULL); |
| 12858 | REQUIRE(zname != NULL); |
| 12859 | |
| 12860 | LOCK(&view->new_zone_lock); |
| 12861 | |
| 12862 | cfg_map_get(config, "zone" , &zl); |
| 12863 | |
| 12864 | if (!cfg_obj_islist(zl)) |
| 12865 | CHECK(ISC_R_FAILURE); |
| 12866 | |
| 12867 | DE_CONST(&zl->value.list, list); |
| 12868 | |
| 12869 | myname = dns_fixedname_initname(&myfixed); |
| 12870 | |
| 12871 | for (elt = ISC_LIST_HEAD(*list); |
| 12872 | elt != NULL; |
| 12873 | elt = ISC_LIST_NEXT(elt, link)) |
| 12874 | { |
| 12875 | const cfg_obj_t *zconf = cfg_listelt_value(elt); |
| 12876 | const char *zn; |
| 12877 | cfg_listelt_t *e; |
| 12878 | |
| 12879 | zn = cfg_obj_asstring(cfg_tuple_get(zconf, "name" )); |
| 12880 | result = dns_name_fromstring(myname, zn, 0, NULL); |
| 12881 | if (result != ISC_R_SUCCESS || |
| 12882 | !dns_name_equal(zname, myname)) |
| 12883 | continue; |
| 12884 | |
| 12885 | DE_CONST(elt, e); |
| 12886 | ISC_LIST_UNLINK(*list, e, link); |
| 12887 | cfg_obj_destroy(pctx, &e->obj); |
| 12888 | isc_mem_put(pctx->mctx, e, sizeof(*e)); |
| 12889 | result = ISC_R_SUCCESS; |
| 12890 | break; |
| 12891 | } |
| 12892 | |
| 12893 | /* |
| 12894 | * Write config to NZF file if appropriate |
| 12895 | */ |
| 12896 | if (nzfwriter != NULL && view->new_zone_file != NULL) |
| 12897 | result = nzfwriter(config, view); |
| 12898 | |
| 12899 | cleanup: |
| 12900 | UNLOCK(&view->new_zone_lock); |
| 12901 | return (result); |
| 12902 | } |
| 12903 | |
| 12904 | static isc_result_t |
| 12905 | do_addzone(named_server_t *server, ns_cfgctx_t *cfg, dns_view_t *view, |
| 12906 | dns_name_t *name, cfg_obj_t *zoneconf, const cfg_obj_t *zoneobj, |
| 12907 | bool redirect, isc_buffer_t **text) |
| 12908 | { |
| 12909 | isc_result_t result, tresult; |
| 12910 | dns_zone_t *zone = NULL; |
| 12911 | #ifndef HAVE_LMDB |
| 12912 | FILE *fp = NULL; |
| 12913 | bool cleanup_config = false; |
| 12914 | #else /* HAVE_LMDB */ |
| 12915 | MDB_txn *txn = NULL; |
| 12916 | MDB_dbi dbi; |
| 12917 | |
| 12918 | UNUSED(zoneconf); |
| 12919 | #endif /* HAVE_LMDB */ |
| 12920 | |
| 12921 | /* Zone shouldn't already exist */ |
| 12922 | if (redirect) { |
| 12923 | result = (view->redirect != NULL) ? ISC_R_SUCCESS : |
| 12924 | ISC_R_NOTFOUND; |
| 12925 | } else |
| 12926 | result = dns_zt_find(view->zonetable, name, 0, NULL, &zone); |
| 12927 | if (result == ISC_R_SUCCESS) { |
| 12928 | result = ISC_R_EXISTS; |
| 12929 | goto cleanup; |
| 12930 | } else if (result == DNS_R_PARTIALMATCH) { |
| 12931 | /* Create our sub-zone anyway */ |
| 12932 | dns_zone_detach(&zone); |
| 12933 | zone = NULL; |
| 12934 | } else if (result != ISC_R_NOTFOUND) |
| 12935 | goto cleanup; |
| 12936 | |
| 12937 | #ifndef HAVE_LMDB |
| 12938 | /* |
| 12939 | * Make sure we can open the configuration save file |
| 12940 | */ |
| 12941 | result = isc_stdio_open(view->new_zone_file, "a" , &fp); |
| 12942 | if (result != ISC_R_SUCCESS) { |
| 12943 | TCHECK(putstr(text, "unable to create '" )); |
| 12944 | TCHECK(putstr(text, view->new_zone_file)); |
| 12945 | TCHECK(putstr(text, "': " )); |
| 12946 | TCHECK(putstr(text, isc_result_totext(result))); |
| 12947 | goto cleanup; |
| 12948 | } |
| 12949 | |
| 12950 | (void)isc_stdio_close(fp); |
| 12951 | fp = NULL; |
| 12952 | #else /* HAVE_LMDB */ |
| 12953 | /* Make sure we can open the NZD database */ |
| 12954 | result = nzd_writable(view); |
| 12955 | if (result != ISC_R_SUCCESS) { |
| 12956 | TCHECK(putstr(text, "unable to open NZD database for '" )); |
| 12957 | TCHECK(putstr(text, view->new_zone_db)); |
| 12958 | TCHECK(putstr(text, "'" )); |
| 12959 | result = ISC_R_FAILURE; |
| 12960 | goto cleanup; |
| 12961 | } |
| 12962 | #endif /* HAVE_LMDB */ |
| 12963 | |
| 12964 | result = isc_task_beginexclusive(server->task); |
| 12965 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 12966 | |
| 12967 | /* Mark view unfrozen and configure zone */ |
| 12968 | dns_view_thaw(view); |
| 12969 | result = configure_zone(cfg->config, zoneobj, cfg->vconfig, |
| 12970 | server->mctx, view, &server->viewlist, |
| 12971 | cfg->actx, true, false, false); |
| 12972 | dns_view_freeze(view); |
| 12973 | |
| 12974 | isc_task_endexclusive(server->task); |
| 12975 | |
| 12976 | if (result != ISC_R_SUCCESS) { |
| 12977 | TCHECK(putstr(text, "configure_zone failed: " )); |
| 12978 | TCHECK(putstr(text, isc_result_totext(result))); |
| 12979 | goto cleanup; |
| 12980 | } |
| 12981 | |
| 12982 | /* Is it there yet? */ |
| 12983 | if (redirect) { |
| 12984 | if (view->redirect == NULL) |
| 12985 | CHECK(ISC_R_NOTFOUND); |
| 12986 | dns_zone_attach(view->redirect, &zone); |
| 12987 | } else { |
| 12988 | result = dns_zt_find(view->zonetable, name, 0, NULL, &zone); |
| 12989 | if (result != ISC_R_SUCCESS) { |
| 12990 | isc_log_write(named_g_lctx, |
| 12991 | NAMED_LOGCATEGORY_GENERAL, |
| 12992 | NAMED_LOGMODULE_SERVER, |
| 12993 | ISC_LOG_ERROR, |
| 12994 | "added new zone was not found: %s" , |
| 12995 | isc_result_totext(result)); |
| 12996 | goto cleanup; |
| 12997 | } |
| 12998 | } |
| 12999 | |
| 13000 | #ifndef HAVE_LMDB |
| 13001 | /* |
| 13002 | * If there wasn't a previous newzone config, just save the one |
| 13003 | * we've created. If there was a previous one, merge the new |
| 13004 | * zone into it. |
| 13005 | */ |
| 13006 | if (cfg->nzf_config == NULL) { |
| 13007 | cfg_obj_attach(zoneconf, &cfg->nzf_config); |
| 13008 | } else { |
| 13009 | cfg_obj_t *z; |
| 13010 | DE_CONST(zoneobj, z); |
| 13011 | CHECK(cfg_parser_mapadd(cfg->add_parser, |
| 13012 | cfg->nzf_config, z, "zone" )); |
| 13013 | } |
| 13014 | cleanup_config = true; |
| 13015 | #endif /* HAVE_LMDB */ |
| 13016 | |
| 13017 | /* |
| 13018 | * Load the zone from the master file. If this fails, we'll |
| 13019 | * need to undo the configuration we've done already. |
| 13020 | */ |
| 13021 | result = dns_zone_load(zone, true); |
| 13022 | if (result != ISC_R_SUCCESS) { |
| 13023 | dns_db_t *dbp = NULL; |
| 13024 | |
| 13025 | TCHECK(putstr(text, "dns_zone_loadnew failed: " )); |
| 13026 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13027 | |
| 13028 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13029 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13030 | "addzone failed; reverting." ); |
| 13031 | |
| 13032 | /* If the zone loaded partially, unload it */ |
| 13033 | if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) { |
| 13034 | dns_db_detach(&dbp); |
| 13035 | dns_zone_unload(zone); |
| 13036 | } |
| 13037 | |
| 13038 | /* Remove the zone from the zone table */ |
| 13039 | dns_zt_unmount(view->zonetable, zone); |
| 13040 | goto cleanup; |
| 13041 | } |
| 13042 | |
| 13043 | /* Flag the zone as having been added at runtime */ |
| 13044 | dns_zone_setadded(zone, true); |
| 13045 | |
| 13046 | #ifdef HAVE_LMDB |
| 13047 | /* Save the new zone configuration into the NZD */ |
| 13048 | CHECK(nzd_open(view, 0, &txn, &dbi)); |
| 13049 | CHECK(nzd_save(&txn, dbi, zone, zoneobj)); |
| 13050 | #else |
| 13051 | /* Append the zone configuration to the NZF */ |
| 13052 | result = nzf_append(view, zoneobj); |
| 13053 | #endif /* HAVE_LMDB */ |
| 13054 | |
| 13055 | cleanup: |
| 13056 | |
| 13057 | #ifndef HAVE_LMDB |
| 13058 | if (fp != NULL) |
| 13059 | (void)isc_stdio_close(fp); |
| 13060 | if (result != ISC_R_SUCCESS && cleanup_config) { |
| 13061 | tresult = delete_zoneconf(view, cfg->add_parser, |
| 13062 | cfg->nzf_config, name, |
| 13063 | NULL); |
| 13064 | RUNTIME_CHECK(tresult == ISC_R_SUCCESS); |
| 13065 | } |
| 13066 | #else /* HAVE_LMDB */ |
| 13067 | if (txn != NULL) |
| 13068 | (void) nzd_close(&txn, false); |
| 13069 | #endif /* HAVE_LMDB */ |
| 13070 | |
| 13071 | if (zone != NULL) |
| 13072 | dns_zone_detach(&zone); |
| 13073 | |
| 13074 | return (result); |
| 13075 | } |
| 13076 | |
| 13077 | static isc_result_t |
| 13078 | do_modzone(named_server_t *server, ns_cfgctx_t *cfg, dns_view_t *view, |
| 13079 | dns_name_t *name, const char *zname, const cfg_obj_t *zoneobj, |
| 13080 | bool redirect, isc_buffer_t **text) |
| 13081 | { |
| 13082 | isc_result_t result, tresult; |
| 13083 | dns_zone_t *zone = NULL; |
| 13084 | bool added; |
| 13085 | bool exclusive = false; |
| 13086 | #ifndef HAVE_LMDB |
| 13087 | FILE *fp = NULL; |
| 13088 | cfg_obj_t *z; |
| 13089 | #else /* HAVE_LMDB */ |
| 13090 | MDB_txn *txn = NULL; |
| 13091 | MDB_dbi dbi; |
| 13092 | #endif /* HAVE_LMDB */ |
| 13093 | |
| 13094 | /* Zone must already exist */ |
| 13095 | if (redirect) { |
| 13096 | if (view->redirect != NULL) { |
| 13097 | dns_zone_attach(view->redirect, &zone); |
| 13098 | result = ISC_R_SUCCESS; |
| 13099 | } else |
| 13100 | result = ISC_R_NOTFOUND; |
| 13101 | } else |
| 13102 | result = dns_zt_find(view->zonetable, name, 0, NULL, &zone); |
| 13103 | if (result != ISC_R_SUCCESS) |
| 13104 | goto cleanup; |
| 13105 | |
| 13106 | added = dns_zone_getadded(zone); |
| 13107 | dns_zone_detach(&zone); |
| 13108 | |
| 13109 | #ifndef HAVE_LMDB |
| 13110 | cfg = (ns_cfgctx_t *) view->new_zone_config; |
| 13111 | if (cfg == NULL) { |
| 13112 | TCHECK(putstr(text, "new zone config is not set" )); |
| 13113 | CHECK(ISC_R_FAILURE); |
| 13114 | } |
| 13115 | #endif |
| 13116 | |
| 13117 | result = isc_task_beginexclusive(server->task); |
| 13118 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 13119 | exclusive = true; |
| 13120 | |
| 13121 | #ifndef HAVE_LMDB |
| 13122 | /* Make sure we can open the configuration save file */ |
| 13123 | result = isc_stdio_open(view->new_zone_file, "a" , &fp); |
| 13124 | if (result != ISC_R_SUCCESS) { |
| 13125 | TCHECK(putstr(text, "unable to open '" )); |
| 13126 | TCHECK(putstr(text, view->new_zone_file)); |
| 13127 | TCHECK(putstr(text, "': " )); |
| 13128 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13129 | goto cleanup; |
| 13130 | } |
| 13131 | (void)isc_stdio_close(fp); |
| 13132 | fp = NULL; |
| 13133 | #else /* HAVE_LMDB */ |
| 13134 | /* Make sure we can open the NZD database */ |
| 13135 | result = nzd_writable(view); |
| 13136 | if (result != ISC_R_SUCCESS) { |
| 13137 | TCHECK(putstr(text, "unable to open NZD database for '" )); |
| 13138 | TCHECK(putstr(text, view->new_zone_db)); |
| 13139 | TCHECK(putstr(text, "'" )); |
| 13140 | result = ISC_R_FAILURE; |
| 13141 | goto cleanup; |
| 13142 | } |
| 13143 | #endif /* HAVE_LMDB */ |
| 13144 | |
| 13145 | /* Reconfigure the zone */ |
| 13146 | dns_view_thaw(view); |
| 13147 | result = configure_zone(cfg->config, zoneobj, cfg->vconfig, |
| 13148 | server->mctx, view, &server->viewlist, |
| 13149 | cfg->actx, true, false, true); |
| 13150 | dns_view_freeze(view); |
| 13151 | |
| 13152 | exclusive = false; |
| 13153 | isc_task_endexclusive(server->task); |
| 13154 | |
| 13155 | if (result != ISC_R_SUCCESS) { |
| 13156 | TCHECK(putstr(text, "configure_zone failed: " )); |
| 13157 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13158 | goto cleanup; |
| 13159 | } |
| 13160 | |
| 13161 | /* Is it there yet? */ |
| 13162 | if (redirect) { |
| 13163 | if (view->redirect == NULL) |
| 13164 | CHECK(ISC_R_NOTFOUND); |
| 13165 | dns_zone_attach(view->redirect, &zone); |
| 13166 | } else |
| 13167 | CHECK(dns_zt_find(view->zonetable, name, 0, NULL, &zone)); |
| 13168 | |
| 13169 | |
| 13170 | |
| 13171 | #ifndef HAVE_LMDB |
| 13172 | /* Remove old zone from configuration (and NZF file if applicable) */ |
| 13173 | if (added) { |
| 13174 | result = delete_zoneconf(view, cfg->add_parser, |
| 13175 | cfg->nzf_config, |
| 13176 | dns_zone_getorigin(zone), |
| 13177 | nzf_writeconf); |
| 13178 | if (result != ISC_R_SUCCESS) { |
| 13179 | TCHECK(putstr(text, "former zone configuration " |
| 13180 | "not deleted: " )); |
| 13181 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13182 | goto cleanup; |
| 13183 | } |
| 13184 | } |
| 13185 | #endif /* HAVE_LMDB */ |
| 13186 | |
| 13187 | if (!added) { |
| 13188 | if (cfg->vconfig == NULL) { |
| 13189 | result = delete_zoneconf(view, cfg->conf_parser, |
| 13190 | cfg->config, |
| 13191 | dns_zone_getorigin(zone), |
| 13192 | NULL); |
| 13193 | } else { |
| 13194 | const cfg_obj_t *voptions = |
| 13195 | cfg_tuple_get(cfg->vconfig, "options" ); |
| 13196 | result = delete_zoneconf(view, cfg->conf_parser, |
| 13197 | voptions, |
| 13198 | dns_zone_getorigin(zone), |
| 13199 | NULL); |
| 13200 | } |
| 13201 | |
| 13202 | if (result != ISC_R_SUCCESS) { |
| 13203 | TCHECK(putstr(text, "former zone configuration " |
| 13204 | "not deleted: " )); |
| 13205 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13206 | goto cleanup; |
| 13207 | } |
| 13208 | } |
| 13209 | |
| 13210 | /* Load the zone from the master file if it needs reloading. */ |
| 13211 | result = dns_zone_load(zone, true); |
| 13212 | |
| 13213 | /* |
| 13214 | * Dynamic zones need no reloading, so we can pass this result. |
| 13215 | */ |
| 13216 | if (result == DNS_R_DYNAMIC) |
| 13217 | result = ISC_R_SUCCESS; |
| 13218 | |
| 13219 | if (result != ISC_R_SUCCESS) { |
| 13220 | dns_db_t *dbp = NULL; |
| 13221 | |
| 13222 | TCHECK(putstr(text, "failed to load zone '" )); |
| 13223 | TCHECK(putstr(text, zname)); |
| 13224 | TCHECK(putstr(text, "': " )); |
| 13225 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13226 | TCHECK(putstr(text, "\nThe zone is no longer being served. " )); |
| 13227 | TCHECK(putstr(text, "Use 'rndc addzone' to correct\n" )); |
| 13228 | TCHECK(putstr(text, "the problem and restore service." )); |
| 13229 | |
| 13230 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13231 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13232 | "modzone failed; removing zone." ); |
| 13233 | |
| 13234 | /* If the zone loaded partially, unload it */ |
| 13235 | if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) { |
| 13236 | dns_db_detach(&dbp); |
| 13237 | dns_zone_unload(zone); |
| 13238 | } |
| 13239 | |
| 13240 | /* Remove the zone from the zone table */ |
| 13241 | dns_zt_unmount(view->zonetable, zone); |
| 13242 | goto cleanup; |
| 13243 | } |
| 13244 | |
| 13245 | #ifndef HAVE_LMDB |
| 13246 | /* Store the new zone configuration; also in NZF if applicable */ |
| 13247 | DE_CONST(zoneobj, z); |
| 13248 | CHECK(cfg_parser_mapadd(cfg->add_parser, cfg->nzf_config, z, "zone" )); |
| 13249 | #endif /* HAVE_LMDB */ |
| 13250 | |
| 13251 | if (added) { |
| 13252 | #ifdef HAVE_LMDB |
| 13253 | CHECK(nzd_open(view, 0, &txn, &dbi)); |
| 13254 | CHECK(nzd_save(&txn, dbi, zone, zoneobj)); |
| 13255 | #else |
| 13256 | result = nzf_append(view, zoneobj); |
| 13257 | if (result != ISC_R_SUCCESS) { |
| 13258 | TCHECK(putstr(text, "\nNew zone config not saved: " )); |
| 13259 | TCHECK(putstr(text, isc_result_totext(result))); |
| 13260 | goto cleanup; |
| 13261 | } |
| 13262 | #endif /* HAVE_LMDB */ |
| 13263 | |
| 13264 | TCHECK(putstr(text, "zone '" )); |
| 13265 | TCHECK(putstr(text, zname)); |
| 13266 | TCHECK(putstr(text, "' reconfigured." )); |
| 13267 | |
| 13268 | } else { |
| 13269 | TCHECK(putstr(text, "zone '" )); |
| 13270 | TCHECK(putstr(text, zname)); |
| 13271 | TCHECK(putstr(text, "' must also be reconfigured in\n" )); |
| 13272 | TCHECK(putstr(text, "named.conf to make changes permanent." )); |
| 13273 | } |
| 13274 | |
| 13275 | cleanup: |
| 13276 | if (exclusive) |
| 13277 | isc_task_endexclusive(server->task); |
| 13278 | |
| 13279 | #ifndef HAVE_LMDB |
| 13280 | if (fp != NULL) |
| 13281 | (void)isc_stdio_close(fp); |
| 13282 | #else /* HAVE_LMDB */ |
| 13283 | if (txn != NULL) |
| 13284 | (void) nzd_close(&txn, false); |
| 13285 | #endif /* HAVE_LMDB */ |
| 13286 | |
| 13287 | if (zone != NULL) |
| 13288 | dns_zone_detach(&zone); |
| 13289 | |
| 13290 | return (result); |
| 13291 | } |
| 13292 | |
| 13293 | /* |
| 13294 | * Act on an "addzone" or "modzone" command from the command channel. |
| 13295 | */ |
| 13296 | isc_result_t |
| 13297 | named_server_changezone(named_server_t *server, char *command, |
| 13298 | isc_buffer_t **text) |
| 13299 | { |
| 13300 | isc_result_t result; |
| 13301 | bool addzone; |
| 13302 | bool redirect = false; |
| 13303 | ns_cfgctx_t *cfg = NULL; |
| 13304 | cfg_obj_t *zoneconf = NULL; |
| 13305 | const cfg_obj_t *zoneobj = NULL; |
| 13306 | const char *zonename; |
| 13307 | dns_view_t *view = NULL; |
| 13308 | isc_buffer_t buf; |
| 13309 | dns_fixedname_t fname; |
| 13310 | dns_name_t *dnsname; |
| 13311 | |
| 13312 | if (strncasecmp(command, "add" , 3) == 0) |
| 13313 | addzone = true; |
| 13314 | else { |
| 13315 | INSIST(strncasecmp(command, "mod" , 3) == 0); |
| 13316 | addzone = false; |
| 13317 | } |
| 13318 | |
| 13319 | CHECK(newzone_parse(server, command, &view, &zoneconf, |
| 13320 | &zoneobj, &redirect, text)); |
| 13321 | |
| 13322 | /* Are we accepting new zones in this view? */ |
| 13323 | #ifdef HAVE_LMDB |
| 13324 | if (view->new_zone_db == NULL) |
| 13325 | #else |
| 13326 | if (view->new_zone_file == NULL) |
| 13327 | #endif /* HAVE_LMDB */ |
| 13328 | { |
| 13329 | (void) putstr(text, "Not allowing new zones in view '" ); |
| 13330 | (void) putstr(text, view->name); |
| 13331 | (void) putstr(text, "'" ); |
| 13332 | result = ISC_R_NOPERM; |
| 13333 | goto cleanup; |
| 13334 | } |
| 13335 | |
| 13336 | cfg = (ns_cfgctx_t *) view->new_zone_config; |
| 13337 | if (cfg == NULL) { |
| 13338 | result = ISC_R_FAILURE; |
| 13339 | goto cleanup; |
| 13340 | } |
| 13341 | |
| 13342 | zonename = cfg_obj_asstring(cfg_tuple_get(zoneobj, "name" )); |
| 13343 | isc_buffer_constinit(&buf, zonename, strlen(zonename)); |
| 13344 | isc_buffer_add(&buf, strlen(zonename)); |
| 13345 | |
| 13346 | dnsname = dns_fixedname_initname(&fname); |
| 13347 | CHECK(dns_name_fromtext(dnsname, &buf, dns_rootname, 0, NULL)); |
| 13348 | |
| 13349 | if (redirect) { |
| 13350 | if (!dns_name_equal(dnsname, dns_rootname)) { |
| 13351 | (void) putstr(text, |
| 13352 | "redirect zones must be called \".\"" ); |
| 13353 | CHECK(ISC_R_FAILURE); |
| 13354 | } |
| 13355 | } |
| 13356 | |
| 13357 | if (addzone) |
| 13358 | CHECK(do_addzone(server, cfg, view, dnsname, zoneconf, |
| 13359 | zoneobj, redirect, text)); |
| 13360 | else |
| 13361 | CHECK(do_modzone(server, cfg, view, dnsname, zonename, |
| 13362 | zoneobj, redirect, text)); |
| 13363 | |
| 13364 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13365 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13366 | "%s zone %s in view %s via %s" , |
| 13367 | addzone ? "added" : "updated" , |
| 13368 | zonename, view->name, |
| 13369 | addzone ? NAMED_COMMAND_ADDZONE : NAMED_COMMAND_MODZONE); |
| 13370 | |
| 13371 | /* Changing a zone counts as reconfiguration */ |
| 13372 | CHECK(isc_time_now(&named_g_configtime)); |
| 13373 | |
| 13374 | cleanup: |
| 13375 | if (isc_buffer_usedlength(*text) > 0) |
| 13376 | (void) putnull(text); |
| 13377 | if (zoneconf != NULL) |
| 13378 | cfg_obj_destroy(named_g_addparser, &zoneconf); |
| 13379 | if (view != NULL) |
| 13380 | dns_view_detach(&view); |
| 13381 | |
| 13382 | return (result); |
| 13383 | } |
| 13384 | |
| 13385 | static bool |
| 13386 | inuse(const char* file, bool first, isc_buffer_t **text) { |
| 13387 | if (file != NULL && isc_file_exists(file)) { |
| 13388 | if (first) |
| 13389 | (void) putstr(text, |
| 13390 | "The following files were in use " |
| 13391 | "and may now be removed:\n" ); |
| 13392 | else |
| 13393 | (void) putstr(text, "\n" ); |
| 13394 | (void) putstr(text, file); |
| 13395 | (void) putnull(text); |
| 13396 | return (false); |
| 13397 | } |
| 13398 | return (first); |
| 13399 | } |
| 13400 | |
| 13401 | typedef struct { |
| 13402 | dns_zone_t *zone; |
| 13403 | bool cleanup; |
| 13404 | } ns_dzctx_t; |
| 13405 | |
| 13406 | /* |
| 13407 | * Carry out a zone deletion scheduled by named_server_delzone(). |
| 13408 | */ |
| 13409 | static void |
| 13410 | rmzone(isc_task_t *task, isc_event_t *event) { |
| 13411 | ns_dzctx_t *dz = (ns_dzctx_t *)event->ev_arg; |
| 13412 | dns_zone_t *zone, *raw = NULL, *mayberaw; |
| 13413 | char zonename[DNS_NAME_FORMATSIZE]; |
| 13414 | dns_view_t *view; |
| 13415 | ns_cfgctx_t *cfg; |
| 13416 | dns_db_t *dbp = NULL; |
| 13417 | bool added; |
| 13418 | isc_result_t result; |
| 13419 | #ifdef HAVE_LMDB |
| 13420 | MDB_txn *txn = NULL; |
| 13421 | MDB_dbi dbi; |
| 13422 | #endif |
| 13423 | |
| 13424 | REQUIRE(dz != NULL); |
| 13425 | |
| 13426 | isc_event_free(&event); |
| 13427 | |
| 13428 | /* Dig out configuration for this zone */ |
| 13429 | zone = dz->zone; |
| 13430 | view = dns_zone_getview(zone); |
| 13431 | cfg = (ns_cfgctx_t *) view->new_zone_config; |
| 13432 | dns_name_format(dns_zone_getorigin(zone), zonename, sizeof(zonename)); |
| 13433 | |
| 13434 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13435 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13436 | "deleting zone %s in view %s via delzone" , |
| 13437 | zonename, view->name); |
| 13438 | |
| 13439 | /* Remove the zone from configuration (and NZF file if applicable) */ |
| 13440 | added = dns_zone_getadded(zone); |
| 13441 | |
| 13442 | if (added && cfg != NULL) { |
| 13443 | #ifdef HAVE_LMDB |
| 13444 | /* Make sure we can open the NZD database */ |
| 13445 | result = nzd_open(view, 0, &txn, &dbi); |
| 13446 | if (result != ISC_R_SUCCESS) { |
| 13447 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13448 | NAMED_LOGMODULE_SERVER, |
| 13449 | ISC_LOG_ERROR, |
| 13450 | "unable to open NZD database for '%s'" , |
| 13451 | view->new_zone_db); |
| 13452 | } else { |
| 13453 | result = nzd_save(&txn, dbi, zone, NULL); |
| 13454 | } |
| 13455 | |
| 13456 | if (result != ISC_R_SUCCESS) { |
| 13457 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13458 | NAMED_LOGMODULE_SERVER, |
| 13459 | ISC_LOG_ERROR, "unable to " |
| 13460 | "delete zone configuration: %s" , |
| 13461 | isc_result_totext(result)); |
| 13462 | } |
| 13463 | #else |
| 13464 | result = delete_zoneconf(view, cfg->add_parser, |
| 13465 | cfg->nzf_config, |
| 13466 | dns_zone_getorigin(zone), |
| 13467 | nzf_writeconf); |
| 13468 | if (result != ISC_R_SUCCESS) { |
| 13469 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13470 | NAMED_LOGMODULE_SERVER, |
| 13471 | ISC_LOG_ERROR, "unable to " |
| 13472 | "delete zone configuration: %s" , |
| 13473 | isc_result_totext(result)); |
| 13474 | } |
| 13475 | #endif /* HAVE_LMDB */ |
| 13476 | } |
| 13477 | |
| 13478 | if (!added && cfg != NULL) { |
| 13479 | if (cfg->vconfig != NULL) { |
| 13480 | const cfg_obj_t *voptions = |
| 13481 | cfg_tuple_get(cfg->vconfig, "options" ); |
| 13482 | result = delete_zoneconf(view, cfg->conf_parser, |
| 13483 | voptions, |
| 13484 | dns_zone_getorigin(zone), |
| 13485 | NULL); |
| 13486 | } else { |
| 13487 | result = delete_zoneconf(view, cfg->conf_parser, |
| 13488 | cfg->config, |
| 13489 | dns_zone_getorigin(zone), |
| 13490 | NULL); |
| 13491 | } |
| 13492 | if (result != ISC_R_SUCCESS){ |
| 13493 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13494 | NAMED_LOGMODULE_SERVER, |
| 13495 | ISC_LOG_ERROR, "unable to " |
| 13496 | "delete zone configuration: %s" , |
| 13497 | isc_result_totext(result)); |
| 13498 | } |
| 13499 | } |
| 13500 | |
| 13501 | /* Unload zone database */ |
| 13502 | if (dns_zone_getdb(zone, &dbp) == ISC_R_SUCCESS) { |
| 13503 | dns_db_detach(&dbp); |
| 13504 | dns_zone_unload(zone); |
| 13505 | } |
| 13506 | |
| 13507 | /* Clean up stub/slave zone files if requested to do so */ |
| 13508 | dns_zone_getraw(zone, &raw); |
| 13509 | mayberaw = (raw != NULL) ? raw : zone; |
| 13510 | |
| 13511 | if (added && dz->cleanup) { |
| 13512 | const char *file; |
| 13513 | |
| 13514 | file = dns_zone_getfile(mayberaw); |
| 13515 | result = isc_file_remove(file); |
| 13516 | if (result != ISC_R_SUCCESS) { |
| 13517 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13518 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 13519 | "file %s not removed: %s" , |
| 13520 | file, isc_result_totext(result)); |
| 13521 | } |
| 13522 | |
| 13523 | file = dns_zone_getjournal(mayberaw); |
| 13524 | result = isc_file_remove(file); |
| 13525 | if (result != ISC_R_SUCCESS) { |
| 13526 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13527 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 13528 | "file %s not removed: %s" , |
| 13529 | file, isc_result_totext(result)); |
| 13530 | } |
| 13531 | |
| 13532 | if (zone != mayberaw) { |
| 13533 | file = dns_zone_getfile(zone); |
| 13534 | result = isc_file_remove(file); |
| 13535 | if (result != ISC_R_SUCCESS) { |
| 13536 | isc_log_write(named_g_lctx, |
| 13537 | NAMED_LOGCATEGORY_GENERAL, |
| 13538 | NAMED_LOGMODULE_SERVER, |
| 13539 | ISC_LOG_WARNING, |
| 13540 | "file %s not removed: %s" , |
| 13541 | file, isc_result_totext(result)); |
| 13542 | } |
| 13543 | |
| 13544 | file = dns_zone_getjournal(zone); |
| 13545 | result = isc_file_remove(file); |
| 13546 | if (result != ISC_R_SUCCESS) { |
| 13547 | isc_log_write(named_g_lctx, |
| 13548 | NAMED_LOGCATEGORY_GENERAL, |
| 13549 | NAMED_LOGMODULE_SERVER, |
| 13550 | ISC_LOG_WARNING, |
| 13551 | "file %s not removed: %s" , |
| 13552 | file, isc_result_totext(result)); |
| 13553 | } |
| 13554 | } |
| 13555 | } |
| 13556 | |
| 13557 | #ifdef HAVE_LMDB |
| 13558 | if (txn != NULL) |
| 13559 | (void) nzd_close(&txn, false); |
| 13560 | #endif |
| 13561 | if (raw != NULL) |
| 13562 | dns_zone_detach(&raw); |
| 13563 | dns_zone_detach(&zone); |
| 13564 | isc_mem_put(named_g_mctx, dz, sizeof(*dz)); |
| 13565 | isc_task_detach(&task); |
| 13566 | } |
| 13567 | |
| 13568 | /* |
| 13569 | * Act on a "delzone" command from the command channel. |
| 13570 | */ |
| 13571 | isc_result_t |
| 13572 | named_server_delzone(named_server_t *server, isc_lex_t *lex, |
| 13573 | isc_buffer_t **text) |
| 13574 | { |
| 13575 | isc_result_t result, tresult; |
| 13576 | dns_zone_t *zone = NULL; |
| 13577 | dns_zone_t *raw = NULL; |
| 13578 | dns_zone_t *mayberaw; |
| 13579 | dns_view_t *view = NULL; |
| 13580 | char zonename[DNS_NAME_FORMATSIZE]; |
| 13581 | bool cleanup = false; |
| 13582 | const char *ptr; |
| 13583 | bool added; |
| 13584 | ns_dzctx_t *dz = NULL; |
| 13585 | isc_event_t *dzevent = NULL; |
| 13586 | isc_task_t *task = NULL; |
| 13587 | |
| 13588 | /* Skip the command name. */ |
| 13589 | ptr = next_token(lex, text); |
| 13590 | if (ptr == NULL) |
| 13591 | return (ISC_R_UNEXPECTEDEND); |
| 13592 | |
| 13593 | /* Find out what we are to do. */ |
| 13594 | ptr = next_token(lex, text); |
| 13595 | if (ptr == NULL) |
| 13596 | return (ISC_R_UNEXPECTEDEND); |
| 13597 | |
| 13598 | if (strcmp(ptr, "-clean" ) == 0 || strcmp(ptr, "-clear" ) == 0) { |
| 13599 | cleanup = true; |
| 13600 | ptr = next_token(lex, text); |
| 13601 | } |
| 13602 | |
| 13603 | CHECK(zone_from_args(server, lex, ptr, &zone, zonename, |
| 13604 | text, false)); |
| 13605 | if (zone == NULL) { |
| 13606 | result = ISC_R_UNEXPECTEDEND; |
| 13607 | goto cleanup; |
| 13608 | } |
| 13609 | |
| 13610 | INSIST(zonename != NULL); |
| 13611 | |
| 13612 | /* Is this a policy zone? */ |
| 13613 | if (dns_zone_get_rpz_num(zone) != DNS_RPZ_INVALID_NUM) { |
| 13614 | TCHECK(putstr(text, "zone '" )); |
| 13615 | TCHECK(putstr(text, zonename)); |
| 13616 | TCHECK(putstr(text, |
| 13617 | "' cannot be deleted: response-policy zone." )); |
| 13618 | result = ISC_R_FAILURE; |
| 13619 | goto cleanup; |
| 13620 | } |
| 13621 | |
| 13622 | view = dns_zone_getview(zone); |
| 13623 | if (dns_zone_gettype(zone) == dns_zone_redirect) |
| 13624 | dns_zone_detach(&view->redirect); |
| 13625 | else |
| 13626 | CHECK(dns_zt_unmount(view->zonetable, zone)); |
| 13627 | |
| 13628 | /* Send cleanup event */ |
| 13629 | dz = isc_mem_get(named_g_mctx, sizeof(*dz)); |
| 13630 | if (dz == NULL) |
| 13631 | CHECK(ISC_R_NOMEMORY); |
| 13632 | |
| 13633 | dz->cleanup = cleanup; |
| 13634 | dz->zone = NULL; |
| 13635 | dns_zone_attach(zone, &dz->zone); |
| 13636 | dzevent = isc_event_allocate(named_g_mctx, server, NAMED_EVENT_DELZONE, |
| 13637 | rmzone, dz, sizeof(isc_event_t)); |
| 13638 | if (dzevent == NULL) |
| 13639 | CHECK(ISC_R_NOMEMORY); |
| 13640 | |
| 13641 | dns_zone_gettask(zone, &task); |
| 13642 | isc_task_send(task, &dzevent); |
| 13643 | dz = NULL; |
| 13644 | |
| 13645 | /* Inform user about cleaning up stub/slave zone files */ |
| 13646 | dns_zone_getraw(zone, &raw); |
| 13647 | mayberaw = (raw != NULL) ? raw : zone; |
| 13648 | |
| 13649 | added = dns_zone_getadded(zone); |
| 13650 | if (!added) { |
| 13651 | TCHECK(putstr(text, "zone '" )); |
| 13652 | TCHECK(putstr(text, zonename)); |
| 13653 | TCHECK(putstr(text, |
| 13654 | "' is no longer active and will be deleted.\n" )); |
| 13655 | TCHECK(putstr(text, "To keep it from returning " )); |
| 13656 | TCHECK(putstr(text, "when the server is restarted, it\n" )); |
| 13657 | TCHECK(putstr(text, "must also be removed from named.conf." )); |
| 13658 | } else if (cleanup) { |
| 13659 | TCHECK(putstr(text, "zone '" )); |
| 13660 | TCHECK(putstr(text, zonename)); |
| 13661 | TCHECK(putstr(text, "' and associated files will be deleted." )); |
| 13662 | } else if (dns_zone_gettype(mayberaw) == dns_zone_slave || |
| 13663 | dns_zone_gettype(mayberaw) == dns_zone_mirror || |
| 13664 | dns_zone_gettype(mayberaw) == dns_zone_stub) |
| 13665 | { |
| 13666 | bool first; |
| 13667 | const char *file; |
| 13668 | |
| 13669 | TCHECK(putstr(text, "zone '" )); |
| 13670 | TCHECK(putstr(text, zonename)); |
| 13671 | TCHECK(putstr(text, "' will be deleted." )); |
| 13672 | |
| 13673 | file = dns_zone_getfile(mayberaw); |
| 13674 | first = inuse(file, true, text); |
| 13675 | |
| 13676 | file = dns_zone_getjournal(mayberaw); |
| 13677 | first = inuse(file, first, text); |
| 13678 | |
| 13679 | if (zone != mayberaw) { |
| 13680 | file = dns_zone_getfile(zone); |
| 13681 | first = inuse(file, first, text); |
| 13682 | |
| 13683 | file = dns_zone_getjournal(zone); |
| 13684 | (void) inuse(file, first, text); |
| 13685 | } |
| 13686 | } |
| 13687 | |
| 13688 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13689 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13690 | "zone %s scheduled for removal via delzone" , zonename); |
| 13691 | |
| 13692 | /* Removing a zone counts as reconfiguration */ |
| 13693 | CHECK(isc_time_now(&named_g_configtime)); |
| 13694 | |
| 13695 | result = ISC_R_SUCCESS; |
| 13696 | |
| 13697 | cleanup: |
| 13698 | if (isc_buffer_usedlength(*text) > 0) |
| 13699 | (void) putnull(text); |
| 13700 | if (raw != NULL) |
| 13701 | dns_zone_detach(&raw); |
| 13702 | if (zone != NULL) |
| 13703 | dns_zone_detach(&zone); |
| 13704 | if (dz != NULL) { |
| 13705 | dns_zone_detach(&dz->zone); |
| 13706 | isc_mem_put(named_g_mctx, dz, sizeof(*dz)); |
| 13707 | } |
| 13708 | |
| 13709 | return (result); |
| 13710 | } |
| 13711 | |
| 13712 | static const cfg_obj_t * |
| 13713 | find_name_in_list_from_map(const cfg_obj_t *config, |
| 13714 | const char *map_key_for_list, |
| 13715 | const char *name, bool redirect) |
| 13716 | { |
| 13717 | const cfg_obj_t *list = NULL; |
| 13718 | const cfg_listelt_t *element; |
| 13719 | const cfg_obj_t *obj = NULL; |
| 13720 | dns_fixedname_t fixed1, fixed2; |
| 13721 | dns_name_t *name1 = NULL, *name2 = NULL; |
| 13722 | isc_result_t result; |
| 13723 | |
| 13724 | if (strcmp(map_key_for_list, "zone" ) == 0) { |
| 13725 | name1 = dns_fixedname_initname(&fixed1); |
| 13726 | name2 = dns_fixedname_initname(&fixed2); |
| 13727 | result = dns_name_fromstring(name1, name, 0, NULL); |
| 13728 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 13729 | } |
| 13730 | |
| 13731 | cfg_map_get(config, map_key_for_list, &list); |
| 13732 | for (element = cfg_list_first(list); |
| 13733 | element != NULL; |
| 13734 | element = cfg_list_next(element)) |
| 13735 | { |
| 13736 | const char *vname; |
| 13737 | |
| 13738 | obj = cfg_listelt_value(element); |
| 13739 | INSIST(obj != NULL); |
| 13740 | vname = cfg_obj_asstring(cfg_tuple_get(obj, "name" )); |
| 13741 | if (vname == NULL) { |
| 13742 | obj = NULL; |
| 13743 | continue; |
| 13744 | } |
| 13745 | |
| 13746 | if (name1 != NULL) { |
| 13747 | result = dns_name_fromstring(name2, vname, 0, NULL); |
| 13748 | if (result == ISC_R_SUCCESS && |
| 13749 | dns_name_equal(name1, name2)) { |
| 13750 | const cfg_obj_t *zoptions; |
| 13751 | const cfg_obj_t *typeobj = NULL; |
| 13752 | zoptions = cfg_tuple_get(obj, "options" ); |
| 13753 | |
| 13754 | if (zoptions != NULL) |
| 13755 | cfg_map_get(zoptions, "type" , &typeobj); |
| 13756 | if (redirect && typeobj != NULL && |
| 13757 | strcasecmp(cfg_obj_asstring(typeobj), |
| 13758 | "redirect" ) == 0) |
| 13759 | break; |
| 13760 | else if (!redirect) |
| 13761 | break; |
| 13762 | } |
| 13763 | } else if (strcasecmp(vname, name) == 0) |
| 13764 | break; |
| 13765 | |
| 13766 | obj = NULL; |
| 13767 | } |
| 13768 | |
| 13769 | return (obj); |
| 13770 | } |
| 13771 | |
| 13772 | static void |
| 13773 | emitzone(void *arg, const char *buf, int len) { |
| 13774 | ns_dzarg_t *dzarg = arg; |
| 13775 | isc_result_t result; |
| 13776 | |
| 13777 | REQUIRE(dzarg != NULL && ISC_MAGIC_VALID(dzarg, DZARG_MAGIC)); |
| 13778 | result = putmem(dzarg->text, buf, len); |
| 13779 | if (result != ISC_R_SUCCESS && dzarg->result == ISC_R_SUCCESS) { |
| 13780 | dzarg->result = result; |
| 13781 | } |
| 13782 | } |
| 13783 | |
| 13784 | /* |
| 13785 | * Act on a "showzone" command from the command channel. |
| 13786 | */ |
| 13787 | isc_result_t |
| 13788 | named_server_showzone(named_server_t *server, isc_lex_t *lex, |
| 13789 | isc_buffer_t **text) |
| 13790 | { |
| 13791 | isc_result_t result; |
| 13792 | const cfg_obj_t *vconfig = NULL, *zconfig = NULL; |
| 13793 | char zonename[DNS_NAME_FORMATSIZE]; |
| 13794 | const cfg_obj_t *map; |
| 13795 | dns_view_t *view = NULL; |
| 13796 | dns_zone_t *zone = NULL; |
| 13797 | ns_cfgctx_t *cfg = NULL; |
| 13798 | bool exclusive = false; |
| 13799 | #ifdef HAVE_LMDB |
| 13800 | cfg_obj_t *nzconfig = NULL; |
| 13801 | #endif /* HAVE_LMDB */ |
| 13802 | bool added, redirect; |
| 13803 | ns_dzarg_t dzarg; |
| 13804 | |
| 13805 | /* Parse parameters */ |
| 13806 | CHECK(zone_from_args(server, lex, NULL, &zone, zonename, |
| 13807 | text, true)); |
| 13808 | if (zone == NULL) { |
| 13809 | result = ISC_R_UNEXPECTEDEND; |
| 13810 | goto cleanup; |
| 13811 | } |
| 13812 | |
| 13813 | redirect = dns_zone_gettype(zone) == dns_zone_redirect; |
| 13814 | added = dns_zone_getadded(zone); |
| 13815 | view = dns_zone_getview(zone); |
| 13816 | dns_zone_detach(&zone); |
| 13817 | |
| 13818 | cfg = (ns_cfgctx_t *) view->new_zone_config; |
| 13819 | if (cfg == NULL) { |
| 13820 | result = ISC_R_FAILURE; |
| 13821 | goto cleanup; |
| 13822 | } |
| 13823 | |
| 13824 | result = isc_task_beginexclusive(server->task); |
| 13825 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 13826 | exclusive = true; |
| 13827 | |
| 13828 | if (!added) { |
| 13829 | /* Find the view statement */ |
| 13830 | vconfig = find_name_in_list_from_map(cfg->config, "view" , |
| 13831 | view->name, false); |
| 13832 | |
| 13833 | /* Find the zone statement */ |
| 13834 | if (vconfig != NULL) |
| 13835 | map = cfg_tuple_get(vconfig, "options" ); |
| 13836 | else |
| 13837 | map = cfg->config; |
| 13838 | |
| 13839 | zconfig = find_name_in_list_from_map(map, "zone" , zonename, |
| 13840 | redirect); |
| 13841 | } |
| 13842 | |
| 13843 | #ifndef HAVE_LMDB |
| 13844 | if (zconfig == NULL && cfg->nzf_config != NULL) |
| 13845 | zconfig = find_name_in_list_from_map(cfg->nzf_config, |
| 13846 | "zone" , zonename, |
| 13847 | redirect); |
| 13848 | #else /* HAVE_LMDB */ |
| 13849 | if (zconfig == NULL) { |
| 13850 | const cfg_obj_t *zlist = NULL; |
| 13851 | CHECK(get_newzone_config(view, zonename, &nzconfig)); |
| 13852 | CHECK(cfg_map_get(nzconfig, "zone" , &zlist)); |
| 13853 | if (!cfg_obj_islist(zlist)) |
| 13854 | CHECK(ISC_R_FAILURE); |
| 13855 | |
| 13856 | zconfig = cfg_listelt_value(cfg_list_first(zlist)); |
| 13857 | } |
| 13858 | #endif /* HAVE_LMDB */ |
| 13859 | |
| 13860 | if (zconfig == NULL) |
| 13861 | CHECK(ISC_R_NOTFOUND); |
| 13862 | |
| 13863 | CHECK(putstr(text, "zone " )); |
| 13864 | dzarg.magic = DZARG_MAGIC; |
| 13865 | dzarg.text = text; |
| 13866 | dzarg.result = ISC_R_SUCCESS; |
| 13867 | cfg_printx(zconfig, CFG_PRINTER_ONELINE, emitzone, &dzarg); |
| 13868 | CHECK(dzarg.result); |
| 13869 | |
| 13870 | CHECK(putstr(text, ";" )); |
| 13871 | |
| 13872 | result = ISC_R_SUCCESS; |
| 13873 | |
| 13874 | cleanup: |
| 13875 | #ifdef HAVE_LMDB |
| 13876 | if (nzconfig != NULL) |
| 13877 | cfg_obj_destroy(named_g_addparser, &nzconfig); |
| 13878 | #endif /* HAVE_LMDB */ |
| 13879 | if (isc_buffer_usedlength(*text) > 0) |
| 13880 | (void) putnull(text); |
| 13881 | if (exclusive) |
| 13882 | isc_task_endexclusive(server->task); |
| 13883 | |
| 13884 | return (result); |
| 13885 | } |
| 13886 | |
| 13887 | static void |
| 13888 | newzone_cfgctx_destroy(void **cfgp) { |
| 13889 | ns_cfgctx_t *cfg; |
| 13890 | |
| 13891 | REQUIRE(cfgp != NULL && *cfgp != NULL); |
| 13892 | |
| 13893 | cfg = *cfgp; |
| 13894 | |
| 13895 | if (cfg->conf_parser != NULL) { |
| 13896 | if (cfg->config != NULL) |
| 13897 | cfg_obj_destroy(cfg->conf_parser, &cfg->config); |
| 13898 | if (cfg->vconfig != NULL) |
| 13899 | cfg_obj_destroy(cfg->conf_parser, &cfg->vconfig); |
| 13900 | cfg_parser_destroy(&cfg->conf_parser); |
| 13901 | } |
| 13902 | if (cfg->add_parser != NULL) { |
| 13903 | if (cfg->nzf_config != NULL) |
| 13904 | cfg_obj_destroy(cfg->add_parser, &cfg->nzf_config); |
| 13905 | cfg_parser_destroy(&cfg->add_parser); |
| 13906 | } |
| 13907 | |
| 13908 | if (cfg->actx != NULL) |
| 13909 | cfg_aclconfctx_detach(&cfg->actx); |
| 13910 | |
| 13911 | isc_mem_putanddetach(&cfg->mctx, cfg, sizeof(*cfg)); |
| 13912 | *cfgp = NULL; |
| 13913 | } |
| 13914 | |
| 13915 | static isc_result_t |
| 13916 | generate_salt(unsigned char *salt, size_t saltlen) { |
| 13917 | unsigned char text[512 + 1]; |
| 13918 | isc_region_t r; |
| 13919 | isc_buffer_t buf; |
| 13920 | isc_result_t result; |
| 13921 | |
| 13922 | if (saltlen > 256U) |
| 13923 | return (ISC_R_RANGE); |
| 13924 | |
| 13925 | isc_nonce_buf(salt, saltlen); |
| 13926 | |
| 13927 | r.base = salt; |
| 13928 | r.length = (unsigned int) saltlen; |
| 13929 | |
| 13930 | isc_buffer_init(&buf, text, sizeof(text)); |
| 13931 | result = isc_hex_totext(&r, 2, "" , &buf); |
| 13932 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 13933 | text[saltlen * 2] = 0; |
| 13934 | |
| 13935 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 13936 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 13937 | "generated salt: %s" , text); |
| 13938 | |
| 13939 | return (ISC_R_SUCCESS); |
| 13940 | } |
| 13941 | |
| 13942 | isc_result_t |
| 13943 | named_server_signing(named_server_t *server, isc_lex_t *lex, |
| 13944 | isc_buffer_t **text) |
| 13945 | { |
| 13946 | isc_result_t result = ISC_R_SUCCESS; |
| 13947 | dns_zone_t *zone = NULL; |
| 13948 | dns_name_t *origin; |
| 13949 | dns_db_t *db = NULL; |
| 13950 | dns_dbnode_t *node = NULL; |
| 13951 | dns_dbversion_t *version = NULL; |
| 13952 | dns_rdatatype_t privatetype; |
| 13953 | dns_rdataset_t privset; |
| 13954 | bool first = true; |
| 13955 | bool list = false, clear = false; |
| 13956 | bool chain = false; |
| 13957 | bool setserial = false; |
| 13958 | uint32_t serial = 0; |
| 13959 | char keystr[DNS_SECALG_FORMATSIZE + 7]; /* <5-digit keyid>/<alg> */ |
| 13960 | unsigned short hash = 0, flags = 0, iter = 0, saltlen = 0; |
| 13961 | unsigned char salt[255]; |
| 13962 | const char *ptr; |
| 13963 | size_t n; |
| 13964 | |
| 13965 | dns_rdataset_init(&privset); |
| 13966 | |
| 13967 | /* Skip the command name. */ |
| 13968 | ptr = next_token(lex, text); |
| 13969 | if (ptr == NULL) |
| 13970 | return (ISC_R_UNEXPECTEDEND); |
| 13971 | |
| 13972 | /* Find out what we are to do. */ |
| 13973 | ptr = next_token(lex, text); |
| 13974 | if (ptr == NULL) |
| 13975 | return (ISC_R_UNEXPECTEDEND); |
| 13976 | |
| 13977 | if (strcasecmp(ptr, "-list" ) == 0) |
| 13978 | list = true; |
| 13979 | else if ((strcasecmp(ptr, "-clear" ) == 0) || |
| 13980 | (strcasecmp(ptr, "-clean" ) == 0)) |
| 13981 | { |
| 13982 | clear = true; |
| 13983 | ptr = next_token(lex, text); |
| 13984 | if (ptr == NULL) |
| 13985 | return (ISC_R_UNEXPECTEDEND); |
| 13986 | strlcpy(keystr, ptr, sizeof(keystr)); |
| 13987 | } else if (strcasecmp(ptr, "-nsec3param" ) == 0) { |
| 13988 | char hashbuf[64], flagbuf[64], iterbuf[64]; |
| 13989 | char nbuf[256]; |
| 13990 | |
| 13991 | chain = true; |
| 13992 | ptr = next_token(lex, text); |
| 13993 | if (ptr == NULL) |
| 13994 | return (ISC_R_UNEXPECTEDEND); |
| 13995 | |
| 13996 | if (strcasecmp(ptr, "none" ) == 0) |
| 13997 | hash = 0; |
| 13998 | else { |
| 13999 | strlcpy(hashbuf, ptr, sizeof(hashbuf)); |
| 14000 | |
| 14001 | ptr = next_token(lex, text); |
| 14002 | if (ptr == NULL) |
| 14003 | return (ISC_R_UNEXPECTEDEND); |
| 14004 | strlcpy(flagbuf, ptr, sizeof(flagbuf)); |
| 14005 | |
| 14006 | ptr = next_token(lex, text); |
| 14007 | if (ptr == NULL) |
| 14008 | return (ISC_R_UNEXPECTEDEND); |
| 14009 | strlcpy(iterbuf, ptr, sizeof(iterbuf)); |
| 14010 | |
| 14011 | n = snprintf(nbuf, sizeof(nbuf), "%s %s %s" , |
| 14012 | hashbuf, flagbuf, iterbuf); |
| 14013 | if (n == sizeof(nbuf)) |
| 14014 | return (ISC_R_NOSPACE); |
| 14015 | n = sscanf(nbuf, "%hu %hu %hu" , &hash, &flags, &iter); |
| 14016 | if (n != 3U) |
| 14017 | return (ISC_R_BADNUMBER); |
| 14018 | |
| 14019 | if (hash > 0xffU || flags > 0xffU) |
| 14020 | return (ISC_R_RANGE); |
| 14021 | |
| 14022 | ptr = next_token(lex, text); |
| 14023 | if (ptr == NULL) { |
| 14024 | return (ISC_R_UNEXPECTEDEND); |
| 14025 | } else if (strcasecmp(ptr, "auto" ) == 0) { |
| 14026 | /* Auto-generate a random salt. |
| 14027 | * XXXMUKS: This currently uses the |
| 14028 | * minimum recommended length by RFC |
| 14029 | * 5155 (64 bits). It should be made |
| 14030 | * configurable. |
| 14031 | */ |
| 14032 | saltlen = 8; |
| 14033 | CHECK(generate_salt(salt, saltlen)); |
| 14034 | } else if (strcmp(ptr, "-" ) != 0) { |
| 14035 | isc_buffer_t buf; |
| 14036 | |
| 14037 | isc_buffer_init(&buf, salt, sizeof(salt)); |
| 14038 | CHECK(isc_hex_decodestring(ptr, &buf)); |
| 14039 | saltlen = isc_buffer_usedlength(&buf); |
| 14040 | } |
| 14041 | } |
| 14042 | } else if (strcasecmp(ptr, "-serial" ) == 0) { |
| 14043 | ptr = next_token(lex, text); |
| 14044 | if (ptr == NULL) |
| 14045 | return (ISC_R_UNEXPECTEDEND); |
| 14046 | CHECK(isc_parse_uint32(&serial, ptr, 10)); |
| 14047 | setserial = true; |
| 14048 | } else |
| 14049 | CHECK(DNS_R_SYNTAX); |
| 14050 | |
| 14051 | CHECK(zone_from_args(server, lex, NULL, &zone, NULL, |
| 14052 | text, false)); |
| 14053 | if (zone == NULL) |
| 14054 | CHECK(ISC_R_UNEXPECTEDEND); |
| 14055 | |
| 14056 | if (clear) { |
| 14057 | CHECK(dns_zone_keydone(zone, keystr)); |
| 14058 | (void) putstr(text, "request queued" ); |
| 14059 | (void) putnull(text); |
| 14060 | } else if (chain) { |
| 14061 | CHECK(dns_zone_setnsec3param(zone, (uint8_t)hash, |
| 14062 | (uint8_t)flags, iter, |
| 14063 | (uint8_t)saltlen, salt, |
| 14064 | true)); |
| 14065 | (void) putstr(text, "nsec3param request queued" ); |
| 14066 | (void) putnull(text); |
| 14067 | } else if (setserial) { |
| 14068 | CHECK(dns_zone_setserial(zone, serial)); |
| 14069 | (void) putstr(text, "serial request queued" ); |
| 14070 | (void) putnull(text); |
| 14071 | } else if (list) { |
| 14072 | privatetype = dns_zone_getprivatetype(zone); |
| 14073 | origin = dns_zone_getorigin(zone); |
| 14074 | CHECK(dns_zone_getdb(zone, &db)); |
| 14075 | CHECK(dns_db_findnode(db, origin, false, &node)); |
| 14076 | dns_db_currentversion(db, &version); |
| 14077 | |
| 14078 | result = dns_db_findrdataset(db, node, version, privatetype, |
| 14079 | dns_rdatatype_none, 0, |
| 14080 | &privset, NULL); |
| 14081 | if (result == ISC_R_NOTFOUND) { |
| 14082 | (void) putstr(text, "No signing records found" ); |
| 14083 | (void) putnull(text); |
| 14084 | result = ISC_R_SUCCESS; |
| 14085 | goto cleanup; |
| 14086 | } |
| 14087 | |
| 14088 | for (result = dns_rdataset_first(&privset); |
| 14089 | result == ISC_R_SUCCESS; |
| 14090 | result = dns_rdataset_next(&privset)) |
| 14091 | { |
| 14092 | dns_rdata_t priv = DNS_RDATA_INIT; |
| 14093 | char output[BUFSIZ]; |
| 14094 | isc_buffer_t buf; |
| 14095 | |
| 14096 | dns_rdataset_current(&privset, &priv); |
| 14097 | |
| 14098 | isc_buffer_init(&buf, output, sizeof(output)); |
| 14099 | CHECK(dns_private_totext(&priv, &buf)); |
| 14100 | if (!first) |
| 14101 | CHECK(putstr(text, "\n" )); |
| 14102 | CHECK(putstr(text, output)); |
| 14103 | first = false; |
| 14104 | } |
| 14105 | if (!first) |
| 14106 | CHECK(putnull(text)); |
| 14107 | |
| 14108 | if (result == ISC_R_NOMORE) |
| 14109 | result = ISC_R_SUCCESS; |
| 14110 | } |
| 14111 | |
| 14112 | cleanup: |
| 14113 | if (dns_rdataset_isassociated(&privset)) |
| 14114 | dns_rdataset_disassociate(&privset); |
| 14115 | if (node != NULL) |
| 14116 | dns_db_detachnode(db, &node); |
| 14117 | if (version != NULL) |
| 14118 | dns_db_closeversion(db, &version, false); |
| 14119 | if (db != NULL) |
| 14120 | dns_db_detach(&db); |
| 14121 | if (zone != NULL) |
| 14122 | dns_zone_detach(&zone); |
| 14123 | |
| 14124 | return (result); |
| 14125 | } |
| 14126 | |
| 14127 | static isc_result_t |
| 14128 | putmem(isc_buffer_t **b, const char *str, size_t len) { |
| 14129 | isc_result_t result; |
| 14130 | |
| 14131 | result = isc_buffer_reserve(b, (unsigned int)len); |
| 14132 | if (result != ISC_R_SUCCESS) |
| 14133 | return (ISC_R_NOSPACE); |
| 14134 | |
| 14135 | isc_buffer_putmem(*b, (const unsigned char *)str, (unsigned int)len); |
| 14136 | return (ISC_R_SUCCESS); |
| 14137 | } |
| 14138 | |
| 14139 | static inline isc_result_t |
| 14140 | putstr(isc_buffer_t **b, const char *str) { |
| 14141 | return (putmem(b, str, strlen(str))); |
| 14142 | } |
| 14143 | |
| 14144 | static isc_result_t |
| 14145 | putuint8(isc_buffer_t **b, uint8_t val) { |
| 14146 | isc_result_t result; |
| 14147 | |
| 14148 | result = isc_buffer_reserve(b, 1); |
| 14149 | if (result != ISC_R_SUCCESS) |
| 14150 | return (ISC_R_NOSPACE); |
| 14151 | |
| 14152 | isc_buffer_putuint8(*b, val); |
| 14153 | return (ISC_R_SUCCESS); |
| 14154 | } |
| 14155 | |
| 14156 | static inline isc_result_t |
| 14157 | putnull(isc_buffer_t **b) { |
| 14158 | return (putuint8(b, 0)); |
| 14159 | } |
| 14160 | |
| 14161 | isc_result_t |
| 14162 | named_server_zonestatus(named_server_t *server, isc_lex_t *lex, |
| 14163 | isc_buffer_t **text) |
| 14164 | { |
| 14165 | isc_result_t result = ISC_R_SUCCESS; |
| 14166 | dns_zone_t *zone = NULL, *raw = NULL, *mayberaw = NULL; |
| 14167 | const char *type, *file; |
| 14168 | char zonename[DNS_NAME_FORMATSIZE]; |
| 14169 | uint32_t serial, signed_serial, nodes; |
| 14170 | char serbuf[16], sserbuf[16], nodebuf[16]; |
| 14171 | char resignbuf[DNS_NAME_FORMATSIZE + DNS_RDATATYPE_FORMATSIZE + 2]; |
| 14172 | char lbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14173 | char xbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14174 | char rbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14175 | char kbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14176 | char rtbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14177 | isc_time_t loadtime, expiretime, refreshtime; |
| 14178 | isc_time_t refreshkeytime, resigntime; |
| 14179 | dns_zonetype_t zonetype; |
| 14180 | bool dynamic = false, frozen = false; |
| 14181 | bool hasraw = false; |
| 14182 | bool secure, maintain, allow; |
| 14183 | dns_db_t *db = NULL, *rawdb = NULL; |
| 14184 | char **incfiles = NULL; |
| 14185 | int nfiles = 0; |
| 14186 | |
| 14187 | isc_time_settoepoch(&loadtime); |
| 14188 | isc_time_settoepoch(&refreshtime); |
| 14189 | isc_time_settoepoch(&expiretime); |
| 14190 | isc_time_settoepoch(&refreshkeytime); |
| 14191 | isc_time_settoepoch(&resigntime); |
| 14192 | |
| 14193 | CHECK(zone_from_args(server, lex, NULL, &zone, zonename, |
| 14194 | text, true)); |
| 14195 | if (zone == NULL) { |
| 14196 | result = ISC_R_UNEXPECTEDEND; |
| 14197 | goto cleanup; |
| 14198 | } |
| 14199 | |
| 14200 | /* Inline signing? */ |
| 14201 | CHECK(dns_zone_getdb(zone, &db)); |
| 14202 | dns_zone_getraw(zone, &raw); |
| 14203 | hasraw = (raw != NULL); |
| 14204 | if (hasraw) { |
| 14205 | mayberaw = raw; |
| 14206 | zonetype = dns_zone_gettype(raw); |
| 14207 | CHECK(dns_zone_getdb(raw, &rawdb)); |
| 14208 | } else { |
| 14209 | mayberaw = zone; |
| 14210 | zonetype = dns_zone_gettype(zone); |
| 14211 | } |
| 14212 | |
| 14213 | switch (zonetype) { |
| 14214 | case dns_zone_master: |
| 14215 | type = "master" ; |
| 14216 | break; |
| 14217 | case dns_zone_slave: |
| 14218 | type = "slave" ; |
| 14219 | break; |
| 14220 | case dns_zone_mirror: |
| 14221 | type = "mirror" ; |
| 14222 | break; |
| 14223 | case dns_zone_stub: |
| 14224 | type = "stub" ; |
| 14225 | break; |
| 14226 | case dns_zone_staticstub: |
| 14227 | type = "staticstub" ; |
| 14228 | break; |
| 14229 | case dns_zone_redirect: |
| 14230 | type = "redirect" ; |
| 14231 | break; |
| 14232 | case dns_zone_key: |
| 14233 | type = "key" ; |
| 14234 | break; |
| 14235 | case dns_zone_dlz: |
| 14236 | type = "dlz" ; |
| 14237 | break; |
| 14238 | default: |
| 14239 | type = "unknown" ; |
| 14240 | } |
| 14241 | |
| 14242 | /* Serial number */ |
| 14243 | result = dns_zone_getserial(mayberaw, &serial); |
| 14244 | /* XXXWPK TODO this is to mirror old behavior with dns_zone_getserial */ |
| 14245 | if (result != ISC_R_SUCCESS) { |
| 14246 | serial = 0; |
| 14247 | } |
| 14248 | snprintf(serbuf, sizeof(serbuf), "%u" , serial); |
| 14249 | if (hasraw) { |
| 14250 | result = dns_zone_getserial(zone, &signed_serial); |
| 14251 | /* XXXWPK TODO ut supra */ |
| 14252 | if (result != ISC_R_SUCCESS) { |
| 14253 | serial = 0; |
| 14254 | } |
| 14255 | snprintf(sserbuf, sizeof(sserbuf), "%u" , signed_serial); |
| 14256 | } |
| 14257 | |
| 14258 | /* Database node count */ |
| 14259 | nodes = dns_db_nodecount(hasraw ? rawdb : db); |
| 14260 | snprintf(nodebuf, sizeof(nodebuf), "%u" , nodes); |
| 14261 | |
| 14262 | /* Security */ |
| 14263 | secure = dns_db_issecure(db); |
| 14264 | allow = ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_ALLOW) != 0); |
| 14265 | maintain = ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_MAINTAIN) != 0); |
| 14266 | |
| 14267 | /* Master files */ |
| 14268 | file = dns_zone_getfile(mayberaw); |
| 14269 | nfiles = dns_zone_getincludes(mayberaw, &incfiles); |
| 14270 | |
| 14271 | /* Load time */ |
| 14272 | dns_zone_getloadtime(zone, &loadtime); |
| 14273 | isc_time_formathttptimestamp(&loadtime, lbuf, sizeof(lbuf)); |
| 14274 | |
| 14275 | /* Refresh/expire times */ |
| 14276 | if (zonetype == dns_zone_slave || |
| 14277 | zonetype == dns_zone_mirror || |
| 14278 | zonetype == dns_zone_stub || |
| 14279 | zonetype == dns_zone_redirect) |
| 14280 | { |
| 14281 | dns_zone_getexpiretime(mayberaw, &expiretime); |
| 14282 | isc_time_formathttptimestamp(&expiretime, xbuf, sizeof(xbuf)); |
| 14283 | dns_zone_getrefreshtime(mayberaw, &refreshtime); |
| 14284 | isc_time_formathttptimestamp(&refreshtime, rbuf, sizeof(rbuf)); |
| 14285 | } |
| 14286 | |
| 14287 | /* Key refresh time */ |
| 14288 | if (zonetype == dns_zone_master || |
| 14289 | (zonetype == dns_zone_slave && hasraw)) |
| 14290 | { |
| 14291 | dns_zone_getrefreshkeytime(zone, &refreshkeytime); |
| 14292 | isc_time_formathttptimestamp(&refreshkeytime, kbuf, |
| 14293 | sizeof(kbuf)); |
| 14294 | } |
| 14295 | |
| 14296 | /* Dynamic? */ |
| 14297 | if (zonetype == dns_zone_master) { |
| 14298 | dynamic = dns_zone_isdynamic(mayberaw, true); |
| 14299 | frozen = dynamic && !dns_zone_isdynamic(mayberaw, false); |
| 14300 | } |
| 14301 | |
| 14302 | /* Next resign event */ |
| 14303 | if (secure && (zonetype == dns_zone_master || |
| 14304 | (zonetype == dns_zone_slave && hasraw)) && |
| 14305 | ((dns_zone_getkeyopts(zone) & DNS_ZONEKEY_NORESIGN) == 0)) |
| 14306 | { |
| 14307 | dns_name_t *name; |
| 14308 | dns_fixedname_t fixed; |
| 14309 | dns_rdataset_t next; |
| 14310 | |
| 14311 | dns_rdataset_init(&next); |
| 14312 | name = dns_fixedname_initname(&fixed); |
| 14313 | |
| 14314 | result = dns_db_getsigningtime(db, &next, name); |
| 14315 | if (result == ISC_R_SUCCESS) { |
| 14316 | isc_stdtime_t timenow; |
| 14317 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 14318 | char typebuf[DNS_RDATATYPE_FORMATSIZE]; |
| 14319 | |
| 14320 | isc_stdtime_get(&timenow); |
| 14321 | dns_name_format(name, namebuf, sizeof(namebuf)); |
| 14322 | dns_rdatatype_format(next.covers, |
| 14323 | typebuf, sizeof(typebuf)); |
| 14324 | snprintf(resignbuf, sizeof(resignbuf), |
| 14325 | "%s/%s" , namebuf, typebuf); |
| 14326 | isc_time_set(&resigntime, next.resign - |
| 14327 | dns_zone_getsigresigninginterval(zone), 0); |
| 14328 | isc_time_formathttptimestamp(&resigntime, rtbuf, |
| 14329 | sizeof(rtbuf)); |
| 14330 | dns_rdataset_disassociate(&next); |
| 14331 | } |
| 14332 | } |
| 14333 | |
| 14334 | /* Create text */ |
| 14335 | CHECK(putstr(text, "name: " )); |
| 14336 | CHECK(putstr(text, zonename)); |
| 14337 | |
| 14338 | CHECK(putstr(text, "\ntype: " )); |
| 14339 | CHECK(putstr(text, type)); |
| 14340 | |
| 14341 | if (file != NULL) { |
| 14342 | int i; |
| 14343 | CHECK(putstr(text, "\nfiles: " )); |
| 14344 | CHECK(putstr(text, file)); |
| 14345 | for (i = 0; i < nfiles; i++) { |
| 14346 | CHECK(putstr(text, ", " )); |
| 14347 | if (incfiles[i] != NULL) { |
| 14348 | CHECK(putstr(text, incfiles[i])); |
| 14349 | } |
| 14350 | } |
| 14351 | } |
| 14352 | |
| 14353 | CHECK(putstr(text, "\nserial: " )); |
| 14354 | CHECK(putstr(text, serbuf)); |
| 14355 | if (hasraw) { |
| 14356 | CHECK(putstr(text, "\nsigned serial: " )); |
| 14357 | CHECK(putstr(text, sserbuf)); |
| 14358 | } |
| 14359 | |
| 14360 | CHECK(putstr(text, "\nnodes: " )); |
| 14361 | CHECK(putstr(text, nodebuf)); |
| 14362 | |
| 14363 | if (! isc_time_isepoch(&loadtime)) { |
| 14364 | CHECK(putstr(text, "\nlast loaded: " )); |
| 14365 | CHECK(putstr(text, lbuf)); |
| 14366 | } |
| 14367 | |
| 14368 | if (! isc_time_isepoch(&refreshtime)) { |
| 14369 | CHECK(putstr(text, "\nnext refresh: " )); |
| 14370 | CHECK(putstr(text, rbuf)); |
| 14371 | } |
| 14372 | |
| 14373 | if (! isc_time_isepoch(&expiretime)) { |
| 14374 | CHECK(putstr(text, "\nexpires: " )); |
| 14375 | CHECK(putstr(text, xbuf)); |
| 14376 | } |
| 14377 | |
| 14378 | if (secure) { |
| 14379 | CHECK(putstr(text, "\nsecure: yes" )); |
| 14380 | if (hasraw) { |
| 14381 | CHECK(putstr(text, "\ninline signing: yes" )); |
| 14382 | } else { |
| 14383 | CHECK(putstr(text, "\ninline signing: no" )); |
| 14384 | } |
| 14385 | } else { |
| 14386 | CHECK(putstr(text, "\nsecure: no" )); |
| 14387 | } |
| 14388 | |
| 14389 | if (maintain) { |
| 14390 | CHECK(putstr(text, "\nkey maintenance: automatic" )); |
| 14391 | if (! isc_time_isepoch(&refreshkeytime)) { |
| 14392 | CHECK(putstr(text, "\nnext key event: " )); |
| 14393 | CHECK(putstr(text, kbuf)); |
| 14394 | } |
| 14395 | } else if (allow) { |
| 14396 | CHECK(putstr(text, "\nkey maintenance: on command" )); |
| 14397 | } else if (secure || hasraw) { |
| 14398 | CHECK(putstr(text, "\nkey maintenance: none" )); |
| 14399 | } |
| 14400 | |
| 14401 | if (!isc_time_isepoch(&resigntime)) { |
| 14402 | CHECK(putstr(text, "\nnext resign node: " )); |
| 14403 | CHECK(putstr(text, resignbuf)); |
| 14404 | CHECK(putstr(text, "\nnext resign time: " )); |
| 14405 | CHECK(putstr(text, rtbuf)); |
| 14406 | } |
| 14407 | |
| 14408 | if (dynamic) { |
| 14409 | CHECK(putstr(text, "\ndynamic: yes" )); |
| 14410 | if (frozen) { |
| 14411 | CHECK(putstr(text, "\nfrozen: yes" )); |
| 14412 | } else { |
| 14413 | CHECK(putstr(text, "\nfrozen: no" )); |
| 14414 | } |
| 14415 | } else { |
| 14416 | CHECK(putstr(text, "\ndynamic: no" )); |
| 14417 | } |
| 14418 | |
| 14419 | CHECK(putstr(text, "\nreconfigurable via modzone: " )); |
| 14420 | CHECK(putstr(text, dns_zone_getadded(zone) ? "yes" : "no" )); |
| 14421 | |
| 14422 | cleanup: |
| 14423 | /* Indicate truncated output if possible. */ |
| 14424 | if (result == ISC_R_NOSPACE) { |
| 14425 | (void) putstr(text, "\n..." ); |
| 14426 | } |
| 14427 | if ((result == ISC_R_SUCCESS || result == ISC_R_NOSPACE)) { |
| 14428 | (void) putnull(text); |
| 14429 | } |
| 14430 | |
| 14431 | if (db != NULL) { |
| 14432 | dns_db_detach(&db); |
| 14433 | } |
| 14434 | if (rawdb != NULL) { |
| 14435 | dns_db_detach(&rawdb); |
| 14436 | } |
| 14437 | if (incfiles != NULL && mayberaw != NULL) { |
| 14438 | int i; |
| 14439 | isc_mem_t *mctx = dns_zone_getmctx(mayberaw); |
| 14440 | |
| 14441 | for (i = 0; i < nfiles; i++) { |
| 14442 | if (incfiles[i] != NULL) { |
| 14443 | isc_mem_free(mctx, incfiles[i]); |
| 14444 | } |
| 14445 | } |
| 14446 | isc_mem_free(mctx, incfiles); |
| 14447 | } |
| 14448 | if (raw != NULL) { |
| 14449 | dns_zone_detach(&raw); |
| 14450 | } |
| 14451 | if (zone != NULL) { |
| 14452 | dns_zone_detach(&zone); |
| 14453 | } |
| 14454 | return (result); |
| 14455 | } |
| 14456 | |
| 14457 | static inline bool |
| 14458 | argcheck(char *cmd, const char *full) { |
| 14459 | size_t l; |
| 14460 | |
| 14461 | if (cmd == NULL || cmd[0] != '-') |
| 14462 | return (false); |
| 14463 | |
| 14464 | cmd++; |
| 14465 | l = strlen(cmd); |
| 14466 | if (l > strlen(full) || strncasecmp(cmd, full, l) != 0) |
| 14467 | return (false); |
| 14468 | |
| 14469 | return (true); |
| 14470 | } |
| 14471 | |
| 14472 | isc_result_t |
| 14473 | named_server_nta(named_server_t *server, isc_lex_t *lex, |
| 14474 | bool readonly, isc_buffer_t **text) |
| 14475 | { |
| 14476 | dns_view_t *view; |
| 14477 | dns_ntatable_t *ntatable = NULL; |
| 14478 | isc_result_t result = ISC_R_SUCCESS; |
| 14479 | char *ptr, *nametext = NULL, *viewname; |
| 14480 | char namebuf[DNS_NAME_FORMATSIZE]; |
| 14481 | char viewbuf[DNS_NAME_FORMATSIZE]; |
| 14482 | isc_stdtime_t now, when; |
| 14483 | isc_time_t t; |
| 14484 | char tbuf[64]; |
| 14485 | const char *msg = NULL; |
| 14486 | bool dump = false, force = false; |
| 14487 | dns_fixedname_t fn; |
| 14488 | const dns_name_t *ntaname; |
| 14489 | dns_name_t *fname; |
| 14490 | dns_ttl_t ntattl; |
| 14491 | bool ttlset = false, excl = false, viewfound = false; |
| 14492 | dns_rdataclass_t rdclass = dns_rdataclass_in; |
| 14493 | bool first = true; |
| 14494 | |
| 14495 | UNUSED(force); |
| 14496 | |
| 14497 | fname = dns_fixedname_initname(&fn); |
| 14498 | |
| 14499 | /* Skip the command name. */ |
| 14500 | ptr = next_token(lex, text); |
| 14501 | if (ptr == NULL) { |
| 14502 | return (ISC_R_UNEXPECTEDEND); |
| 14503 | } |
| 14504 | |
| 14505 | for (;;) { |
| 14506 | |
| 14507 | /* Check for options */ |
| 14508 | ptr = next_token(lex, text); |
| 14509 | if (ptr == NULL) { |
| 14510 | return (ISC_R_UNEXPECTEDEND); |
| 14511 | } |
| 14512 | |
| 14513 | if (strcmp(ptr, "--" ) == 0) { |
| 14514 | break; |
| 14515 | } else if (argcheck(ptr, "dump" )) { |
| 14516 | dump = true; |
| 14517 | } else if (argcheck(ptr, "remove" )) { |
| 14518 | ntattl = 0; |
| 14519 | ttlset = true; |
| 14520 | } else if (argcheck(ptr, "force" )) { |
| 14521 | force = true; |
| 14522 | continue; |
| 14523 | } else if (argcheck(ptr, "lifetime" )) { |
| 14524 | isc_textregion_t tr; |
| 14525 | |
| 14526 | ptr = next_token(lex, text); |
| 14527 | if (ptr == NULL) { |
| 14528 | msg = "No lifetime specified" ; |
| 14529 | CHECK(ISC_R_UNEXPECTEDEND); |
| 14530 | } |
| 14531 | |
| 14532 | tr.base = ptr; |
| 14533 | tr.length = strlen(ptr); |
| 14534 | result = dns_ttl_fromtext(&tr, &ntattl); |
| 14535 | if (result != ISC_R_SUCCESS) { |
| 14536 | msg = "could not parse NTA lifetime" ; |
| 14537 | CHECK(result); |
| 14538 | } |
| 14539 | |
| 14540 | if (ntattl > 604800) { |
| 14541 | msg = "NTA lifetime cannot exceed one week" ; |
| 14542 | CHECK(ISC_R_RANGE); |
| 14543 | } |
| 14544 | |
| 14545 | ttlset = true; |
| 14546 | continue; |
| 14547 | } else if (argcheck(ptr, "class" )) { |
| 14548 | isc_textregion_t tr; |
| 14549 | |
| 14550 | ptr = next_token(lex, text); |
| 14551 | if (ptr == NULL) { |
| 14552 | msg = "No class specified" ; |
| 14553 | CHECK(ISC_R_UNEXPECTEDEND); |
| 14554 | } |
| 14555 | |
| 14556 | tr.base = ptr; |
| 14557 | tr.length = strlen(ptr); |
| 14558 | CHECK(dns_rdataclass_fromtext(&rdclass, &tr)); |
| 14559 | continue; |
| 14560 | } else if (ptr[0] == '-') { |
| 14561 | msg = "Unknown option" ; |
| 14562 | CHECK(DNS_R_SYNTAX); |
| 14563 | } else { |
| 14564 | nametext = ptr; |
| 14565 | } |
| 14566 | |
| 14567 | break; |
| 14568 | } |
| 14569 | |
| 14570 | /* |
| 14571 | * If -dump was specified, list NTA's and return |
| 14572 | */ |
| 14573 | if (dump) { |
| 14574 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 14575 | view != NULL; |
| 14576 | view = ISC_LIST_NEXT(view, link)) |
| 14577 | { |
| 14578 | if (ntatable != NULL) { |
| 14579 | dns_ntatable_detach(&ntatable); |
| 14580 | } |
| 14581 | result = dns_view_getntatable(view, &ntatable); |
| 14582 | if (result == ISC_R_NOTFOUND) { |
| 14583 | continue; |
| 14584 | } |
| 14585 | |
| 14586 | CHECK(dns_ntatable_totext(ntatable, view->name, text)); |
| 14587 | } |
| 14588 | CHECK(putnull(text)); |
| 14589 | |
| 14590 | goto cleanup; |
| 14591 | } |
| 14592 | |
| 14593 | if (readonly) { |
| 14594 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14595 | NAMED_LOGMODULE_CONTROL, ISC_LOG_INFO, |
| 14596 | "rejecting restricted control channel " |
| 14597 | "NTA command" ); |
| 14598 | CHECK(ISC_R_FAILURE); |
| 14599 | } |
| 14600 | |
| 14601 | /* Get the NTA name if not found above. */ |
| 14602 | if (nametext == NULL) { |
| 14603 | nametext = next_token(lex, text); |
| 14604 | } |
| 14605 | if (nametext == NULL) { |
| 14606 | return (ISC_R_UNEXPECTEDEND); |
| 14607 | } |
| 14608 | |
| 14609 | /* Copy nametext as it'll be overwritten by next_token() */ |
| 14610 | strlcpy(namebuf, nametext, DNS_NAME_FORMATSIZE); |
| 14611 | |
| 14612 | if (strcmp(namebuf, "." ) == 0) { |
| 14613 | ntaname = dns_rootname; |
| 14614 | } else { |
| 14615 | isc_buffer_t b; |
| 14616 | isc_buffer_init(&b, namebuf, strlen(namebuf)); |
| 14617 | isc_buffer_add(&b, strlen(namebuf)); |
| 14618 | CHECK(dns_name_fromtext(fname, &b, dns_rootname, 0, NULL)); |
| 14619 | ntaname = fname; |
| 14620 | } |
| 14621 | |
| 14622 | /* Look for the view name. */ |
| 14623 | viewname = next_token(lex, text); |
| 14624 | if (viewname != NULL) { |
| 14625 | strlcpy(viewbuf, viewname, DNS_NAME_FORMATSIZE); |
| 14626 | viewname = viewbuf; |
| 14627 | } |
| 14628 | |
| 14629 | if (next_token(lex, text) != NULL) { |
| 14630 | CHECK(DNS_R_SYNTAX); |
| 14631 | } |
| 14632 | |
| 14633 | isc_stdtime_get(&now); |
| 14634 | |
| 14635 | result = isc_task_beginexclusive(server->task); |
| 14636 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 14637 | excl = true; |
| 14638 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 14639 | view != NULL; |
| 14640 | view = ISC_LIST_NEXT(view, link)) |
| 14641 | { |
| 14642 | if (viewname != NULL && strcmp(view->name, viewname) != 0) { |
| 14643 | continue; |
| 14644 | } |
| 14645 | viewfound = true; |
| 14646 | |
| 14647 | if (view->rdclass != rdclass && rdclass != dns_rdataclass_any) { |
| 14648 | continue; |
| 14649 | } |
| 14650 | |
| 14651 | if (view->nta_lifetime == 0) { |
| 14652 | continue; |
| 14653 | } |
| 14654 | |
| 14655 | if (!ttlset) { |
| 14656 | ntattl = view->nta_lifetime; |
| 14657 | } |
| 14658 | |
| 14659 | if (ntatable != NULL) { |
| 14660 | dns_ntatable_detach(&ntatable); |
| 14661 | } |
| 14662 | |
| 14663 | result = dns_view_getntatable(view, &ntatable); |
| 14664 | if (result == ISC_R_NOTFOUND) { |
| 14665 | result = ISC_R_SUCCESS; |
| 14666 | continue; |
| 14667 | } |
| 14668 | |
| 14669 | result = dns_view_flushnode(view, ntaname, true); |
| 14670 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14671 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 14672 | "flush tree '%s' in cache view '%s': %s" , |
| 14673 | namebuf, view->name, |
| 14674 | isc_result_totext(result)); |
| 14675 | |
| 14676 | if (ntattl != 0) { |
| 14677 | CHECK(dns_ntatable_add(ntatable, ntaname, |
| 14678 | force, now, ntattl)); |
| 14679 | |
| 14680 | when = now + ntattl; |
| 14681 | isc_time_set(&t, when, 0); |
| 14682 | isc_time_formattimestamp(&t, tbuf, sizeof(tbuf)); |
| 14683 | |
| 14684 | if (!first) { |
| 14685 | CHECK(putstr(text, "\n" )); |
| 14686 | } |
| 14687 | first = false; |
| 14688 | |
| 14689 | CHECK(putstr(text, "Negative trust anchor added: " )); |
| 14690 | CHECK(putstr(text, namebuf)); |
| 14691 | CHECK(putstr(text, "/" )); |
| 14692 | CHECK(putstr(text, view->name)); |
| 14693 | CHECK(putstr(text, ", expires " )); |
| 14694 | CHECK(putstr(text, tbuf)); |
| 14695 | |
| 14696 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14697 | NAMED_LOGMODULE_SERVER, ISC_LOG_INFO, |
| 14698 | "added NTA '%s' (%d sec) in view '%s'" , |
| 14699 | namebuf, ntattl, view->name); |
| 14700 | } else { |
| 14701 | bool wasremoved; |
| 14702 | |
| 14703 | result = dns_ntatable_delete(ntatable, ntaname); |
| 14704 | if (result == ISC_R_SUCCESS) { |
| 14705 | wasremoved = true; |
| 14706 | } else if (result == ISC_R_NOTFOUND) { |
| 14707 | wasremoved = false; |
| 14708 | } else { |
| 14709 | goto cleanup; |
| 14710 | } |
| 14711 | |
| 14712 | if (!first) { |
| 14713 | CHECK(putstr(text, "\n" )); |
| 14714 | } |
| 14715 | first = false; |
| 14716 | |
| 14717 | CHECK(putstr(text, "Negative trust anchor " )); |
| 14718 | CHECK(putstr(text, wasremoved ? "removed: " |
| 14719 | : "not found: " )); |
| 14720 | CHECK(putstr(text, namebuf)); |
| 14721 | CHECK(putstr(text, "/" )); |
| 14722 | CHECK(putstr(text, view->name)); |
| 14723 | |
| 14724 | if (wasremoved) { |
| 14725 | isc_log_write(named_g_lctx, |
| 14726 | NAMED_LOGCATEGORY_GENERAL, |
| 14727 | NAMED_LOGMODULE_SERVER, |
| 14728 | ISC_LOG_INFO, |
| 14729 | "removed NTA '%s' in view %s" , |
| 14730 | namebuf, view->name); |
| 14731 | } |
| 14732 | } |
| 14733 | |
| 14734 | result = dns_view_saventa(view); |
| 14735 | if (result != ISC_R_SUCCESS) { |
| 14736 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14737 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 14738 | "error writing NTA file " |
| 14739 | "for view '%s': %s" , |
| 14740 | view->name, isc_result_totext(result)); |
| 14741 | } |
| 14742 | } |
| 14743 | |
| 14744 | if (!viewfound) { |
| 14745 | msg = "No such view" ; |
| 14746 | CHECK(ISC_R_NOTFOUND); |
| 14747 | } |
| 14748 | |
| 14749 | (void) putnull(text); |
| 14750 | |
| 14751 | cleanup: |
| 14752 | if (msg != NULL) { |
| 14753 | (void) putstr(text, msg); |
| 14754 | (void) putnull(text); |
| 14755 | } |
| 14756 | |
| 14757 | if (excl) { |
| 14758 | isc_task_endexclusive(server->task); |
| 14759 | } |
| 14760 | if (ntatable != NULL) { |
| 14761 | dns_ntatable_detach(&ntatable); |
| 14762 | } |
| 14763 | return (result); |
| 14764 | } |
| 14765 | |
| 14766 | isc_result_t |
| 14767 | named_server_saventa(named_server_t *server) { |
| 14768 | dns_view_t *view; |
| 14769 | |
| 14770 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 14771 | view != NULL; |
| 14772 | view = ISC_LIST_NEXT(view, link)) |
| 14773 | { |
| 14774 | isc_result_t result = dns_view_saventa(view); |
| 14775 | |
| 14776 | if (result != ISC_R_SUCCESS) { |
| 14777 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14778 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 14779 | "error writing NTA file " |
| 14780 | "for view '%s': %s" , |
| 14781 | view->name, isc_result_totext(result)); |
| 14782 | } |
| 14783 | } |
| 14784 | |
| 14785 | return (ISC_R_SUCCESS); |
| 14786 | } |
| 14787 | |
| 14788 | isc_result_t |
| 14789 | named_server_loadnta(named_server_t *server) { |
| 14790 | dns_view_t *view; |
| 14791 | |
| 14792 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 14793 | view != NULL; |
| 14794 | view = ISC_LIST_NEXT(view, link)) |
| 14795 | { |
| 14796 | isc_result_t result = dns_view_loadnta(view); |
| 14797 | |
| 14798 | if ((result != ISC_R_SUCCESS) && |
| 14799 | (result != ISC_R_FILENOTFOUND) && |
| 14800 | (result != ISC_R_NOTFOUND)) |
| 14801 | { |
| 14802 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14803 | NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR, |
| 14804 | "error loading NTA file " |
| 14805 | "for view '%s': %s" , |
| 14806 | view->name, isc_result_totext(result)); |
| 14807 | } |
| 14808 | } |
| 14809 | |
| 14810 | return (ISC_R_SUCCESS); |
| 14811 | } |
| 14812 | |
| 14813 | static isc_result_t |
| 14814 | mkey_refresh(dns_view_t *view, isc_buffer_t **text) { |
| 14815 | isc_result_t result; |
| 14816 | char msg[DNS_NAME_FORMATSIZE + 500] = "" ; |
| 14817 | |
| 14818 | snprintf(msg, sizeof(msg), |
| 14819 | "refreshing managed keys for '%s'" , view->name); |
| 14820 | CHECK(putstr(text, msg)); |
| 14821 | CHECK(dns_zone_synckeyzone(view->managed_keys)); |
| 14822 | |
| 14823 | cleanup: |
| 14824 | return (result); |
| 14825 | } |
| 14826 | |
| 14827 | static isc_result_t |
| 14828 | mkey_destroy(named_server_t *server, dns_view_t *view, isc_buffer_t **text) { |
| 14829 | isc_result_t result; |
| 14830 | char msg[DNS_NAME_FORMATSIZE + 500] = "" ; |
| 14831 | bool exclusive = false; |
| 14832 | const char *file = NULL; |
| 14833 | dns_db_t *dbp = NULL; |
| 14834 | dns_zone_t *mkzone = NULL; |
| 14835 | bool removed_a_file = false; |
| 14836 | |
| 14837 | if (view->managed_keys == NULL) { |
| 14838 | CHECK(ISC_R_NOTFOUND); |
| 14839 | } |
| 14840 | |
| 14841 | snprintf(msg, sizeof(msg), |
| 14842 | "destroying managed-keys database for '%s'" , view->name); |
| 14843 | CHECK(putstr(text, msg)); |
| 14844 | |
| 14845 | result = isc_task_beginexclusive(server->task); |
| 14846 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 14847 | exclusive = true; |
| 14848 | |
| 14849 | /* Remove and clean up managed keys zone from view */ |
| 14850 | mkzone = view->managed_keys; |
| 14851 | view->managed_keys = NULL; |
| 14852 | (void)dns_zone_flush(mkzone); |
| 14853 | |
| 14854 | /* Unload zone database */ |
| 14855 | if (dns_zone_getdb(mkzone, &dbp) == ISC_R_SUCCESS) { |
| 14856 | dns_db_detach(&dbp); |
| 14857 | dns_zone_unload(mkzone); |
| 14858 | } |
| 14859 | |
| 14860 | /* Delete files */ |
| 14861 | file = dns_zone_getfile(mkzone); |
| 14862 | result = isc_file_remove(file); |
| 14863 | if (result == ISC_R_SUCCESS) { |
| 14864 | removed_a_file = true; |
| 14865 | } else { |
| 14866 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14867 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 14868 | "file %s not removed: %s" , |
| 14869 | file, isc_result_totext(result)); |
| 14870 | } |
| 14871 | |
| 14872 | file = dns_zone_getjournal(mkzone); |
| 14873 | result = isc_file_remove(file); |
| 14874 | if (result == ISC_R_SUCCESS) { |
| 14875 | removed_a_file = true; |
| 14876 | } else { |
| 14877 | isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL, |
| 14878 | NAMED_LOGMODULE_SERVER, ISC_LOG_WARNING, |
| 14879 | "file %s not removed: %s" , |
| 14880 | file, isc_result_totext(result)); |
| 14881 | } |
| 14882 | |
| 14883 | if (!removed_a_file) { |
| 14884 | CHECK(putstr(text, "error: no files could be removed" )); |
| 14885 | CHECK(ISC_R_FAILURE); |
| 14886 | } |
| 14887 | |
| 14888 | dns_zone_detach(&mkzone); |
| 14889 | result = ISC_R_SUCCESS; |
| 14890 | |
| 14891 | cleanup: |
| 14892 | if (exclusive) { |
| 14893 | isc_task_endexclusive(server->task); |
| 14894 | } |
| 14895 | return (result); |
| 14896 | } |
| 14897 | |
| 14898 | static isc_result_t |
| 14899 | mkey_dumpzone(dns_view_t *view, isc_buffer_t **text) { |
| 14900 | isc_result_t result; |
| 14901 | dns_db_t *db = NULL; |
| 14902 | dns_dbversion_t *ver = NULL; |
| 14903 | dns_rriterator_t rrit; |
| 14904 | isc_stdtime_t now; |
| 14905 | dns_name_t *prevname = NULL; |
| 14906 | |
| 14907 | isc_stdtime_get(&now); |
| 14908 | |
| 14909 | CHECK(dns_zone_getdb(view->managed_keys, &db)); |
| 14910 | dns_db_currentversion(db, &ver); |
| 14911 | dns_rriterator_init(&rrit, db, ver, 0); |
| 14912 | for (result = dns_rriterator_first(&rrit); |
| 14913 | result == ISC_R_SUCCESS; |
| 14914 | result = dns_rriterator_nextrrset(&rrit)) |
| 14915 | { |
| 14916 | char buf[DNS_NAME_FORMATSIZE + 500]; |
| 14917 | dns_name_t *name = NULL; |
| 14918 | dns_rdataset_t *kdset = NULL; |
| 14919 | dns_rdata_t rdata = DNS_RDATA_INIT; |
| 14920 | dns_rdata_keydata_t kd; |
| 14921 | uint32_t ttl; |
| 14922 | |
| 14923 | dns_rriterator_current(&rrit, &name, &ttl, &kdset, NULL); |
| 14924 | if (kdset == NULL || kdset->type != dns_rdatatype_keydata || |
| 14925 | !dns_rdataset_isassociated(kdset)) |
| 14926 | continue; |
| 14927 | |
| 14928 | if (name != prevname) { |
| 14929 | char nbuf[DNS_NAME_FORMATSIZE]; |
| 14930 | dns_name_format(name, nbuf, sizeof(nbuf)); |
| 14931 | snprintf(buf, sizeof(buf), "\n\n name: %s" , nbuf); |
| 14932 | CHECK(putstr(text, buf)); |
| 14933 | } |
| 14934 | |
| 14935 | |
| 14936 | for (result = dns_rdataset_first(kdset); |
| 14937 | result == ISC_R_SUCCESS; |
| 14938 | result = dns_rdataset_next(kdset)) |
| 14939 | { |
| 14940 | char alg[DNS_SECALG_FORMATSIZE]; |
| 14941 | char tbuf[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 14942 | dns_keytag_t keyid; |
| 14943 | isc_region_t r; |
| 14944 | isc_time_t t; |
| 14945 | bool revoked; |
| 14946 | |
| 14947 | dns_rdata_reset(&rdata); |
| 14948 | dns_rdataset_current(kdset, &rdata); |
| 14949 | result = dns_rdata_tostruct(&rdata, &kd, NULL); |
| 14950 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 14951 | |
| 14952 | dns_rdata_toregion(&rdata, &r); |
| 14953 | isc_region_consume(&r, 12); |
| 14954 | keyid = dst_region_computeid(&r); |
| 14955 | |
| 14956 | snprintf(buf, sizeof(buf), "\n keyid: %u" , keyid); |
| 14957 | CHECK(putstr(text, buf)); |
| 14958 | |
| 14959 | dns_secalg_format(kd.algorithm, alg, sizeof(alg)); |
| 14960 | snprintf(buf, sizeof(buf), "\n\talgorithm: %s" , alg); |
| 14961 | CHECK(putstr(text, buf)); |
| 14962 | |
| 14963 | revoked = ((kd.flags & DNS_KEYFLAG_REVOKE) != 0); |
| 14964 | snprintf(buf, sizeof(buf), "\n\tflags:%s%s%s" , |
| 14965 | revoked ? " REVOKE" : "" , |
| 14966 | ((kd.flags & DNS_KEYFLAG_KSK) != 0) |
| 14967 | ? " SEP" : "" , |
| 14968 | (kd.flags == 0) ? " (none)" : "" ); |
| 14969 | CHECK(putstr(text, buf)); |
| 14970 | |
| 14971 | isc_time_set(&t, kd.refresh, 0); |
| 14972 | isc_time_formathttptimestamp(&t, tbuf, sizeof(tbuf)); |
| 14973 | snprintf(buf, sizeof(buf), |
| 14974 | "\n\tnext refresh: %s" , tbuf); |
| 14975 | CHECK(putstr(text, buf)); |
| 14976 | |
| 14977 | if (kd.removehd != 0) { |
| 14978 | isc_time_set(&t, kd.removehd, 0); |
| 14979 | isc_time_formathttptimestamp(&t, tbuf, |
| 14980 | sizeof(tbuf)); |
| 14981 | snprintf(buf, sizeof(buf), |
| 14982 | "\n\tremove at: %s" , tbuf); |
| 14983 | CHECK(putstr(text, buf)); |
| 14984 | } |
| 14985 | |
| 14986 | isc_time_set(&t, kd.addhd, 0); |
| 14987 | isc_time_formathttptimestamp(&t, tbuf, sizeof(tbuf)); |
| 14988 | if (kd.addhd == 0) |
| 14989 | snprintf(buf, sizeof(buf), "\n\tno trust" ); |
| 14990 | else if (revoked) |
| 14991 | snprintf(buf, sizeof(buf), |
| 14992 | "\n\ttrust revoked" ); |
| 14993 | else if (kd.addhd <= now) |
| 14994 | snprintf(buf, sizeof(buf), |
| 14995 | "\n\ttrusted since: %s" , tbuf); |
| 14996 | else if (kd.addhd > now) |
| 14997 | snprintf(buf, sizeof(buf), |
| 14998 | "\n\ttrust pending: %s" , tbuf); |
| 14999 | CHECK(putstr(text, buf)); |
| 15000 | } |
| 15001 | } |
| 15002 | |
| 15003 | if (result == ISC_R_NOMORE) |
| 15004 | result = ISC_R_SUCCESS; |
| 15005 | |
| 15006 | cleanup: |
| 15007 | if (ver != NULL) { |
| 15008 | dns_rriterator_destroy(&rrit); |
| 15009 | dns_db_closeversion(db, &ver, false); |
| 15010 | } |
| 15011 | if (db != NULL) |
| 15012 | dns_db_detach(&db); |
| 15013 | |
| 15014 | return (result); |
| 15015 | } |
| 15016 | |
| 15017 | static isc_result_t |
| 15018 | mkey_status(dns_view_t *view, isc_buffer_t **text) { |
| 15019 | isc_result_t result; |
| 15020 | char msg[ISC_FORMATHTTPTIMESTAMP_SIZE]; |
| 15021 | isc_time_t t; |
| 15022 | |
| 15023 | CHECK(putstr(text, "view: " )); |
| 15024 | CHECK(putstr(text, view->name)); |
| 15025 | |
| 15026 | CHECK(putstr(text, "\nnext scheduled event: " )); |
| 15027 | |
| 15028 | dns_zone_getrefreshkeytime(view->managed_keys, &t); |
| 15029 | if (isc_time_isepoch(&t)) { |
| 15030 | CHECK(putstr(text, "never" )); |
| 15031 | } else { |
| 15032 | isc_time_formathttptimestamp(&t, msg, sizeof(msg)); |
| 15033 | CHECK(putstr(text, msg)); |
| 15034 | } |
| 15035 | |
| 15036 | CHECK(mkey_dumpzone(view, text)); |
| 15037 | |
| 15038 | cleanup: |
| 15039 | return (result); |
| 15040 | } |
| 15041 | |
| 15042 | isc_result_t |
| 15043 | named_server_mkeys(named_server_t *server, isc_lex_t *lex, |
| 15044 | isc_buffer_t **text) |
| 15045 | { |
| 15046 | char *cmd, *classtxt, *viewtxt = NULL; |
| 15047 | isc_result_t result = ISC_R_SUCCESS; |
| 15048 | dns_view_t *view = NULL; |
| 15049 | dns_rdataclass_t rdclass; |
| 15050 | char msg[DNS_NAME_FORMATSIZE + 500] = "" ; |
| 15051 | enum { NONE, STATUS, REFRESH, SYNC, DESTROY } opt = NONE; |
| 15052 | bool found = false; |
| 15053 | bool first = true; |
| 15054 | |
| 15055 | /* Skip rndc command name */ |
| 15056 | cmd = next_token(lex, text); |
| 15057 | if (cmd == NULL) { |
| 15058 | return (ISC_R_UNEXPECTEDEND); |
| 15059 | } |
| 15060 | |
| 15061 | /* Get managed-keys subcommand */ |
| 15062 | cmd = next_token(lex, text); |
| 15063 | if (cmd == NULL) { |
| 15064 | return (ISC_R_UNEXPECTEDEND); |
| 15065 | } |
| 15066 | |
| 15067 | if (strcasecmp(cmd, "status" ) == 0) { |
| 15068 | opt = STATUS; |
| 15069 | } else if (strcasecmp(cmd, "refresh" ) == 0) { |
| 15070 | opt = REFRESH; |
| 15071 | } else if (strcasecmp(cmd, "sync" ) == 0) { |
| 15072 | opt = SYNC; |
| 15073 | } else if (strcasecmp(cmd, "destroy" ) == 0) { |
| 15074 | opt = DESTROY; |
| 15075 | } else { |
| 15076 | snprintf(msg, sizeof(msg), "unknown command '%s'" , cmd); |
| 15077 | (void) putstr(text, msg); |
| 15078 | result = ISC_R_UNEXPECTED; |
| 15079 | goto cleanup; |
| 15080 | } |
| 15081 | |
| 15082 | /* Look for the optional class name. */ |
| 15083 | classtxt = next_token(lex, text); |
| 15084 | if (classtxt != NULL) { |
| 15085 | isc_textregion_t r; |
| 15086 | r.base = classtxt; |
| 15087 | r.length = strlen(classtxt); |
| 15088 | result = dns_rdataclass_fromtext(&rdclass, &r); |
| 15089 | if (result != ISC_R_SUCCESS) { |
| 15090 | snprintf(msg, sizeof(msg), |
| 15091 | "unknown class '%s'" , classtxt); |
| 15092 | (void) putstr(text, msg); |
| 15093 | goto cleanup; |
| 15094 | } |
| 15095 | viewtxt = next_token(lex, text); |
| 15096 | } |
| 15097 | |
| 15098 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 15099 | view != NULL; |
| 15100 | view = ISC_LIST_NEXT(view, link)) |
| 15101 | { |
| 15102 | if (viewtxt != NULL && |
| 15103 | (rdclass != view->rdclass || |
| 15104 | strcmp(view->name, viewtxt) != 0)) |
| 15105 | { |
| 15106 | continue; |
| 15107 | } |
| 15108 | |
| 15109 | if (view->managed_keys == NULL) { |
| 15110 | if (viewtxt != NULL) { |
| 15111 | snprintf(msg, sizeof(msg), |
| 15112 | "view '%s': no managed keys" , viewtxt); |
| 15113 | CHECK(putstr(text, msg)); |
| 15114 | goto cleanup; |
| 15115 | } else { |
| 15116 | continue; |
| 15117 | } |
| 15118 | } |
| 15119 | |
| 15120 | found = true; |
| 15121 | |
| 15122 | switch (opt) { |
| 15123 | case REFRESH: |
| 15124 | if (!first) { |
| 15125 | CHECK(putstr(text, "\n" )); |
| 15126 | } |
| 15127 | CHECK(mkey_refresh(view, text)); |
| 15128 | break; |
| 15129 | case STATUS: |
| 15130 | if (!first) { |
| 15131 | CHECK(putstr(text, "\n\n" )); |
| 15132 | } |
| 15133 | CHECK(mkey_status(view, text)); |
| 15134 | break; |
| 15135 | case SYNC: |
| 15136 | CHECK(dns_zone_flush(view->managed_keys)); |
| 15137 | break; |
| 15138 | case DESTROY: |
| 15139 | if (!first) { |
| 15140 | CHECK(putstr(text, "\n" )); |
| 15141 | } |
| 15142 | CHECK(mkey_destroy(server, view, text)); |
| 15143 | break; |
| 15144 | default: |
| 15145 | INSIST(0); |
| 15146 | ISC_UNREACHABLE(); |
| 15147 | } |
| 15148 | |
| 15149 | if (viewtxt != NULL) { |
| 15150 | break; |
| 15151 | } |
| 15152 | first = false; |
| 15153 | } |
| 15154 | |
| 15155 | if (!found) { |
| 15156 | CHECK(putstr(text, "no views with managed keys" )); |
| 15157 | } |
| 15158 | |
| 15159 | cleanup: |
| 15160 | if (isc_buffer_usedlength(*text) > 0) { |
| 15161 | (void) putnull(text); |
| 15162 | } |
| 15163 | |
| 15164 | return (result); |
| 15165 | } |
| 15166 | |
| 15167 | isc_result_t |
| 15168 | named_server_dnstap(named_server_t *server, isc_lex_t *lex, |
| 15169 | isc_buffer_t **text) |
| 15170 | { |
| 15171 | #ifdef HAVE_DNSTAP |
| 15172 | char *ptr; |
| 15173 | isc_result_t result; |
| 15174 | bool reopen = false; |
| 15175 | int backups = 0; |
| 15176 | |
| 15177 | if (server->dtenv == NULL) |
| 15178 | return (ISC_R_NOTFOUND); |
| 15179 | |
| 15180 | /* Check the command name. */ |
| 15181 | ptr = next_token(lex, text); |
| 15182 | if (ptr == NULL) |
| 15183 | return (ISC_R_UNEXPECTEDEND); |
| 15184 | |
| 15185 | /* "dnstap-reopen" was used in 9.11.0b1 */ |
| 15186 | if (strcasecmp(ptr, "dnstap-reopen" ) == 0) { |
| 15187 | reopen = true; |
| 15188 | } else { |
| 15189 | ptr = next_token(lex, text); |
| 15190 | if (ptr == NULL) |
| 15191 | return (ISC_R_UNEXPECTEDEND); |
| 15192 | } |
| 15193 | |
| 15194 | if (reopen || strcasecmp(ptr, "-reopen" ) == 0) { |
| 15195 | backups = ISC_LOG_ROLLNEVER; |
| 15196 | } else if ((strcasecmp(ptr, "-roll" ) == 0)) { |
| 15197 | unsigned int n; |
| 15198 | ptr = next_token(lex, text); |
| 15199 | if (ptr != NULL) { |
| 15200 | unsigned int u; |
| 15201 | n = sscanf(ptr, "%u" , &u); |
| 15202 | if (n != 1U || u > INT_MAX) |
| 15203 | return (ISC_R_BADNUMBER); |
| 15204 | backups = u; |
| 15205 | } else { |
| 15206 | backups = ISC_LOG_ROLLINFINITE; |
| 15207 | } |
| 15208 | } else { |
| 15209 | return (DNS_R_SYNTAX); |
| 15210 | } |
| 15211 | |
| 15212 | result = dns_dt_reopen(server->dtenv, backups); |
| 15213 | return (result); |
| 15214 | #else |
| 15215 | UNUSED(server); |
| 15216 | UNUSED(lex); |
| 15217 | UNUSED(text); |
| 15218 | return (ISC_R_NOTIMPLEMENTED); |
| 15219 | #endif |
| 15220 | } |
| 15221 | |
| 15222 | isc_result_t |
| 15223 | named_server_tcptimeouts(isc_lex_t *lex, isc_buffer_t **text) { |
| 15224 | char *ptr; |
| 15225 | isc_result_t result = ISC_R_SUCCESS; |
| 15226 | unsigned int initial, idle, keepalive, advertised; |
| 15227 | char msg[128]; |
| 15228 | |
| 15229 | /* Skip the command name. */ |
| 15230 | ptr = next_token(lex, text); |
| 15231 | if (ptr == NULL) |
| 15232 | return (ISC_R_UNEXPECTEDEND); |
| 15233 | |
| 15234 | ns_server_gettimeouts(named_g_server->sctx, |
| 15235 | &initial, &idle, &keepalive, &advertised); |
| 15236 | |
| 15237 | /* Look for optional arguments. */ |
| 15238 | ptr = next_token(lex, NULL); |
| 15239 | if (ptr != NULL) { |
| 15240 | CHECK(isc_parse_uint32(&initial, ptr, 10)); |
| 15241 | if (initial > 1200) |
| 15242 | CHECK(ISC_R_RANGE); |
| 15243 | if (initial < 25) |
| 15244 | CHECK(ISC_R_RANGE); |
| 15245 | |
| 15246 | ptr = next_token(lex, text); |
| 15247 | if (ptr == NULL) |
| 15248 | return (ISC_R_UNEXPECTEDEND); |
| 15249 | CHECK(isc_parse_uint32(&idle, ptr, 10)); |
| 15250 | if (idle > 1200) |
| 15251 | CHECK(ISC_R_RANGE); |
| 15252 | if (idle < 1) |
| 15253 | CHECK(ISC_R_RANGE); |
| 15254 | |
| 15255 | ptr = next_token(lex, text); |
| 15256 | if (ptr == NULL) |
| 15257 | return (ISC_R_UNEXPECTEDEND); |
| 15258 | CHECK(isc_parse_uint32(&keepalive, ptr, 10)); |
| 15259 | if (keepalive > MAX_TCP_TIMEOUT) |
| 15260 | CHECK(ISC_R_RANGE); |
| 15261 | if (keepalive < 1) |
| 15262 | CHECK(ISC_R_RANGE); |
| 15263 | |
| 15264 | ptr = next_token(lex, text); |
| 15265 | if (ptr == NULL) |
| 15266 | return (ISC_R_UNEXPECTEDEND); |
| 15267 | CHECK(isc_parse_uint32(&advertised, ptr, 10)); |
| 15268 | if (advertised > MAX_TCP_TIMEOUT) |
| 15269 | CHECK(ISC_R_RANGE); |
| 15270 | |
| 15271 | result = isc_task_beginexclusive(named_g_server->task); |
| 15272 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 15273 | |
| 15274 | ns_server_settimeouts(named_g_server->sctx, initial, idle, |
| 15275 | keepalive, advertised); |
| 15276 | |
| 15277 | isc_task_endexclusive(named_g_server->task); |
| 15278 | } |
| 15279 | |
| 15280 | snprintf(msg, sizeof(msg), "tcp-initial-timeout=%u\n" , initial); |
| 15281 | CHECK(putstr(text, msg)); |
| 15282 | snprintf(msg, sizeof(msg), "tcp-idle-timeout=%u\n" , idle); |
| 15283 | CHECK(putstr(text, msg)); |
| 15284 | snprintf(msg, sizeof(msg), "tcp-keepalive-timeout=%u\n" , keepalive); |
| 15285 | CHECK(putstr(text, msg)); |
| 15286 | snprintf(msg, sizeof(msg), "tcp-advertised-timeout=%u" , advertised); |
| 15287 | CHECK(putstr(text, msg)); |
| 15288 | |
| 15289 | cleanup: |
| 15290 | if (isc_buffer_usedlength(*text) > 0) |
| 15291 | (void) putnull(text); |
| 15292 | |
| 15293 | return (result); |
| 15294 | } |
| 15295 | |
| 15296 | isc_result_t |
| 15297 | named_server_servestale(named_server_t *server, isc_lex_t *lex, |
| 15298 | isc_buffer_t **text) |
| 15299 | { |
| 15300 | char *ptr, *classtxt, *viewtxt = NULL; |
| 15301 | char msg[128]; |
| 15302 | dns_rdataclass_t rdclass = dns_rdataclass_in; |
| 15303 | dns_view_t *view; |
| 15304 | bool found = false; |
| 15305 | dns_stale_answer_t staleanswersok = dns_stale_answer_conf; |
| 15306 | bool wantstatus = false; |
| 15307 | isc_result_t result = ISC_R_SUCCESS; |
| 15308 | bool exclusive = false; |
| 15309 | |
| 15310 | /* Skip the command name. */ |
| 15311 | ptr = next_token(lex, text); |
| 15312 | if (ptr == NULL) |
| 15313 | return (ISC_R_UNEXPECTEDEND); |
| 15314 | |
| 15315 | ptr = next_token(lex, NULL); |
| 15316 | if (ptr == NULL) |
| 15317 | return (ISC_R_UNEXPECTEDEND); |
| 15318 | |
| 15319 | if (!strcasecmp(ptr, "on" ) || !strcasecmp(ptr, "yes" ) || |
| 15320 | !strcasecmp(ptr, "enable" ) || !strcasecmp(ptr, "true" )) { |
| 15321 | staleanswersok = dns_stale_answer_yes; |
| 15322 | } else if (!strcasecmp(ptr, "off" ) || !strcasecmp(ptr, "no" ) || |
| 15323 | !strcasecmp(ptr, "disable" ) || !strcasecmp(ptr, "false" )) { |
| 15324 | staleanswersok = dns_stale_answer_no; |
| 15325 | } else if (strcasecmp(ptr, "reset" ) == 0) { |
| 15326 | staleanswersok = dns_stale_answer_conf; |
| 15327 | } else if (!strcasecmp(ptr, "check" ) || !strcasecmp(ptr, "status" )) { |
| 15328 | wantstatus = true; |
| 15329 | } else |
| 15330 | return (DNS_R_SYNTAX); |
| 15331 | |
| 15332 | /* Look for the optional class name. */ |
| 15333 | classtxt = next_token(lex, text); |
| 15334 | if (classtxt != NULL) { |
| 15335 | /* Look for the optional view name. */ |
| 15336 | viewtxt = next_token(lex, text); |
| 15337 | } |
| 15338 | |
| 15339 | if (classtxt != NULL) { |
| 15340 | isc_textregion_t r; |
| 15341 | |
| 15342 | r.base = classtxt; |
| 15343 | r.length = strlen(classtxt); |
| 15344 | result = dns_rdataclass_fromtext(&rdclass, &r); |
| 15345 | if (result != ISC_R_SUCCESS) { |
| 15346 | if (viewtxt != NULL) { |
| 15347 | snprintf(msg, sizeof(msg), |
| 15348 | "unknown class '%s'" , classtxt); |
| 15349 | (void) putstr(text, msg); |
| 15350 | goto cleanup; |
| 15351 | } |
| 15352 | |
| 15353 | viewtxt = classtxt; |
| 15354 | classtxt = NULL; |
| 15355 | } |
| 15356 | } |
| 15357 | |
| 15358 | result = isc_task_beginexclusive(server->task); |
| 15359 | RUNTIME_CHECK(result == ISC_R_SUCCESS); |
| 15360 | exclusive = true; |
| 15361 | |
| 15362 | for (view = ISC_LIST_HEAD(server->viewlist); |
| 15363 | view != NULL; |
| 15364 | view = ISC_LIST_NEXT(view, link)) |
| 15365 | { |
| 15366 | dns_ttl_t stale_ttl = 0; |
| 15367 | dns_db_t *db = NULL; |
| 15368 | |
| 15369 | if (classtxt != NULL && rdclass != view->rdclass) |
| 15370 | continue; |
| 15371 | |
| 15372 | if (viewtxt != NULL && strcmp(view->name, viewtxt) != 0) |
| 15373 | continue; |
| 15374 | |
| 15375 | if (!wantstatus) { |
| 15376 | view->staleanswersok = staleanswersok; |
| 15377 | found = true; |
| 15378 | continue; |
| 15379 | } |
| 15380 | |
| 15381 | db = NULL; |
| 15382 | dns_db_attach(view->cachedb, &db); |
| 15383 | (void)dns_db_getservestalettl(db, &stale_ttl); |
| 15384 | dns_db_detach(&db); |
| 15385 | if (found) |
| 15386 | CHECK(putstr(text, "\n" )); |
| 15387 | CHECK(putstr(text, view->name)); |
| 15388 | CHECK(putstr(text, ": " )); |
| 15389 | switch (view->staleanswersok) { |
| 15390 | case dns_stale_answer_yes: |
| 15391 | if (stale_ttl > 0) |
| 15392 | CHECK(putstr(text, "on (rndc)" )); |
| 15393 | else |
| 15394 | CHECK(putstr(text, "off (not-cached)" )); |
| 15395 | break; |
| 15396 | case dns_stale_answer_no: |
| 15397 | CHECK(putstr(text, "off (rndc)" )); |
| 15398 | break; |
| 15399 | case dns_stale_answer_conf: |
| 15400 | if (view->staleanswersenable && stale_ttl > 0) |
| 15401 | CHECK(putstr(text, "on" )); |
| 15402 | else if (view->staleanswersenable) |
| 15403 | CHECK(putstr(text, "off (not-cached)" )); |
| 15404 | else |
| 15405 | CHECK(putstr(text, "off" )); |
| 15406 | break; |
| 15407 | } |
| 15408 | if (stale_ttl > 0) { |
| 15409 | snprintf(msg, sizeof(msg), |
| 15410 | " (stale-answer-ttl=%u max-stale-ttl=%u)" , |
| 15411 | view->staleanswerttl, stale_ttl); |
| 15412 | CHECK(putstr(text, msg)); |
| 15413 | } |
| 15414 | found = true; |
| 15415 | } |
| 15416 | |
| 15417 | if (!found) |
| 15418 | result = ISC_R_NOTFOUND; |
| 15419 | |
| 15420 | cleanup: |
| 15421 | if (exclusive) |
| 15422 | isc_task_endexclusive(named_g_server->task); |
| 15423 | |
| 15424 | if (isc_buffer_usedlength(*text) > 0) |
| 15425 | (void) putnull(text); |
| 15426 | |
| 15427 | return (result); |
| 15428 | } |
| 15429 | |